What Is the Fibonacci System in Betting?
The Fibonacci betting system is a negative progression staking strategy that uses the famous Fibonacci mathematical sequence to determine how much to wager on each bet. Unlike positive progression systems that increase stakes after wins, the Fibonacci system increases your bet size after losses, with the goal of recovering losses through a single winning bet. It's a structured approach to bankroll management that removes emotional decision-making from the betting process.
Definition and Core Concept
The Fibonacci system works by assigning each number in the Fibonacci sequence to a betting unit. When you lose a bet, you move one step forward in the sequence and increase your stake accordingly. When you win, you move two steps backward in the sequence. This creates a mathematical progression designed to ensure that a single win can recover all previous losses and generate a small profit.
The beauty of this system lies in its simplicity: it provides clear, predetermined stakes for every situation, eliminating the temptation to chase losses emotionally or deviate from a rational betting plan. However, this simplicity masks a more complex reality about how the system actually performs in practice.
The Fibonacci Sequence in Betting:
| Position | Fibonacci Number | Betting Units | Example Stake (£1 unit) |
|---|---|---|---|
| 1 | 1 | 1 | £1 |
| 2 | 1 | 1 | £1 |
| 3 | 2 | 2 | £2 |
| 4 | 3 | 3 | £3 |
| 5 | 5 | 5 | £5 |
| 6 | 8 | 8 | £8 |
| 7 | 13 | 13 | £13 |
| 8 | 21 | 21 | £21 |
| 9 | 34 | 34 | £34 |
| 10 | 55 | 55 | £55 |
| 11 | 89 | 89 | £89 |
| 12 | 144 | 144 | £144 |
| 13 | 233 | 233 | £233 |
| 14 | 377 | 377 | £377 |
| 15 | 610 | 610 | £610 |
The Mathematical Foundation
The Fibonacci sequence follows a simple mathematical rule: each number is the sum of the two numbers that precede it. Expressed mathematically, if F(n) represents the nth Fibonacci number, then:
- F(1) = 1
- F(2) = 1
- F(n) = F(n-1) + F(n-2) for all n ≥ 3
This means: 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, and so on indefinitely. The sequence grows exponentially, with each number roughly 1.618 times larger than the previous one—a ratio known as the "golden ratio" in mathematics and nature.
The reason this mathematical property matters for betting is that it creates a progression that increases more gradually than other negative progression systems like Martingale (which doubles stakes). This gradual increase was theoretically designed to be more sustainable over longer betting sessions, though in practice, stakes still escalate rapidly during extended losing streaks.
Where Did the Fibonacci Betting System Come From?
Leonardo Fibonacci and Historical Origins
The Fibonacci sequence wasn't invented for gambling—it was discovered by Leonardo of Pisa, an Italian mathematician also known as Leonardo Fibonacci, in the early 13th century. In his book Liber Abaci (Book of Calculation), published in 1202, Fibonacci introduced Western European mathematics to the Hindu-Arabic numeral system and presented the now-famous sequence as a solution to a rabbit breeding problem.
What made the Fibonacci sequence remarkable wasn't just its mathematical elegance, but the fact that it appears throughout nature. Fibonacci numbers govern the spiral arrangement of seeds in sunflowers, the branching patterns of trees, the arrangement of pine cone scales, the proportions of seashells (particularly the Nautilus shell), and even the spiral structure of galaxies. This ubiquity in nature fascinated mathematicians, artists, and scientists for centuries.
The sequence became foundational to mathematics and was eventually applied to fields ranging from architecture and art to finance and economics. The golden ratio derived from the Fibonacci sequence (approximately 1.618) became known as one of nature's most fundamental proportions.
Evolution in Gambling and Betting
Centuries after Fibonacci's mathematical discovery, gamblers and betting strategists realized they could apply the sequence to wagering. The system became particularly popular in 18th and 19th century European casinos, where it was used primarily for games with near-even odds like roulette. The appeal was obvious: here was a mathematical sequence that appeared in nature itself, so perhaps it could be harnessed to beat the odds in gambling.
The logic seemed sound at the time: if you increase your bets according to this natural mathematical progression, you might overcome the house edge. The system gained a reputation as a "mathematically sophisticated" approach to betting, attracting both casual players and serious gamblers.
As sports betting grew in popularity throughout the 20th century, the Fibonacci system migrated from casinos to sportsbooks. Modern bettors adopted it as a structured staking plan, believing that disciplined progression through the sequence could provide consistent profits. Today, the Fibonacci betting system remains one of the most discussed staking strategies in both casino and sports betting communities, though its actual effectiveness remains hotly debated.
How Does the Fibonacci Betting System Work?
Step-by-Step Mechanism
The Fibonacci betting system operates according to simple rules, but executing it correctly requires discipline and careful tracking. Here's how it works:
The Core Rules:
- Select a unit size (e.g., £1, £5, or £10) based on your bankroll
- Start at the beginning of the Fibonacci sequence (position 1)
- Place your first bet using the stake corresponding to your position in the sequence
- If you lose: Move forward one position in the sequence and place your next bet at the new stake
- If you win: Move backward two positions in the sequence; if this takes you below position 1, stop and reset to position 1
- Continue until you reach your profit goal or exhaust your bankroll
The mathematical elegance of this system is that a single win should theoretically recover all previous losses and generate a small profit equal to your original unit stake.
Detailed Betting Example
Let's walk through a realistic scenario with a £1 unit size and even-money odds (like betting on red/black in roulette or a -110 spread in sports betting):
| Bet # | Position | Stake | Result | Running Balance |
|---|---|---|---|---|
| 1 | 1 | £1 | Loss | -£1 |
| 2 | 2 | £1 | Loss | -£2 |
| 3 | 3 | £2 | Loss | -£4 |
| 4 | 4 | £3 | Loss | -£7 |
| 5 | 5 | £5 | WIN | -£2 |
| 6 | 3 | £2 | Loss | -£4 |
| 7 | 4 | £3 | Loss | -£7 |
| 8 | 5 | £5 | Loss | -£12 |
| 9 | 6 | £8 | WIN | -£4 |
| 10 | 4 | £3 | WIN | -£1 |
| 11 | 2 | £1 | Loss | -£2 |
| 12 | 3 | £2 | WIN | £0 |
| 13 | 1 | £1 | WIN | £1 |
In this example, the bettor placed 13 bets with 5 wins and 8 losses (a 38% win rate). Despite winning less than half the bets, the system produced a £1 profit. This illustrates the system's theoretical advantage: you don't need to win the majority of bets to profit; you just need to win enough to trigger the reset mechanism.
Calculating Your Bets
Selecting Your Unit Size: Your unit size should be a stake you can afford to lose multiple times without jeopardizing your overall bankroll. Most experts recommend unit sizes between 1-5% of your total betting capital. For example:
- If your bankroll is £500, reasonable unit sizes would be £5-£25
- If your bankroll is £1,000, reasonable unit sizes would be £10-£50
- If your bankroll is £100, reasonable unit sizes would be £1-£5
Calculating Bankroll Requirements: To safely use the Fibonacci system, you need enough capital to weather extended losing streaks. Here's a rough guide:
| Number of Consecutive Losses | Total Units Needed | Example (£5 unit) | Example (£10 unit) |
|---|---|---|---|
| 5 losses | 19 units | £95 | £190 |
| 7 losses | 53 units | £265 | £530 |
| 10 losses | 231 units | £1,155 | £2,310 |
| 12 losses | 608 units | £3,040 | £6,080 |
Notice how quickly the required bankroll grows. A £10 unit size requires over £6,000 in capital to safely handle 12 consecutive losses—a scenario that, while rare, is certainly possible.
Resetting and Progression Rules
When you win a bet, you don't simply stay at your current position in the sequence. Instead, you move back two positions. This is crucial because it's designed to reduce your exposure after a win, protecting profits and preparing you for potential future losses.
Example of Resetting:
- You're at position 5 (£5 stake) and win → Move back to position 3 (£2 stake)
- You're at position 3 and win → Move back to position 1 (£1 stake)
- You're at position 1 and win → Stop and reset; you've completed a successful cycle
If a win takes you below position 1 (which happens when you're at position 1 or 2 and win), you've completed a full cycle. The recommendation is to reset and start again from position 1, treating this as the conclusion of one session and the beginning of another.
Fibonacci System vs. Other Betting Strategies
To understand whether the Fibonacci system is right for you, it's helpful to compare it to other popular negative progression betting systems.
Comparison Table: Fibonacci vs. Martingale vs. D'Alembert
| Aspect | Fibonacci | Martingale | D'Alembert |
|---|---|---|---|
| Method | Increase by sequence after loss | Double stake after loss | Increase by 1 unit after loss |
| Progression Speed | Moderate (exponential) | Very Fast (exponential) | Slow (linear) |
| Risk Level | Moderate-High | Very High | Moderate |
| Bankroll Required | Substantial (100+ units) | Massive (often impossible) | Moderate (50+ units) |
| Profit per Win | 1 unit (small) | 1 unit (small) | Variable (depends on losses) |
| Suitable Odds | Even money (50%) | Even money (50%) | Even money (50%) |
| Long-term Viability | Poor (house edge wins) | Poor (ruin inevitable) | Poor (house edge wins) |
| Complexity | Moderate | Simple | Simple |
| Best For | Cautious bettors | Aggressive bettors | Conservative bettors |
Fibonacci vs. Martingale System
The Martingale system is the most aggressive negative progression strategy. It requires you to double your stake after every loss. While this guarantees recovery of losses (theoretically), it also escalates stakes dangerously fast. After just 10 consecutive losses with a £1 unit, you'd need to place a £1,024 bet on the 11th bet—clearly unsustainable for most bettors.
The Fibonacci system is significantly more conservative. Stakes increase more gradually, making it theoretically more sustainable. However, this gradual approach comes at a cost: if you do hit a devastating losing streak, your stakes still escalate substantially, and you're not recovering losses as quickly as Martingale would (if you had unlimited funds).
Fibonacci vs. D'Alembert System
The D'Alembert system is even more conservative than Fibonacci. Instead of following a sequence, you simply increase your stake by 1 unit after a loss and decrease by 1 unit after a win. This linear progression is much safer for your bankroll but also produces much smaller profits.
Many experienced bettors consider D'Alembert the "safer" option because it doesn't escalate stakes as quickly. However, it also doesn't recover losses as efficiently. The choice between Fibonacci and D'Alembert often comes down to your risk tolerance: Fibonacci for those willing to accept higher risk for faster loss recovery, D'Alembert for those prioritizing bankroll preservation.
Advantages of the Fibonacci Betting System
Structured Bankroll Management
Perhaps the most significant advantage of the Fibonacci system is that it removes emotional decision-making from betting. Instead of deciding on a whim how much to wager, you simply follow the sequence. This discipline prevents the common mistake of increasing stakes recklessly after losses—a behavior that destroys bankrolls far more often than any mathematical system could.
The predetermined nature of the system means you know exactly what you'll be wagering before you place each bet. This allows for accurate bankroll planning and helps you avoid the dangerous trap of "just one more bet" at an inflated stake.
Gradual Bet Increases
Compared to the Martingale system, the Fibonacci sequence increases stakes much more gradually. After 5 consecutive losses, Fibonacci requires a £5 stake (with a £1 unit), while Martingale would require £16. After 10 losses, Fibonacci requires £55 versus Martingale's £512. This gradual increase makes the system more sustainable over longer sessions.
Recovering Losses Systematically
The system is mathematically designed so that a single win at the right point in the sequence can recover all previous losses and generate a profit equal to your unit stake. This creates a clear mechanism for loss recovery that feels more achievable than simply "betting bigger until you win."
Consistency and Predictability
Following the Fibonacci sequence produces consistent, predictable results (assuming even-money odds and sufficient bankroll). You're not hoping for a miracle or betting on luck; you're following a mathematical formula. This predictability appeals to analytical bettors who appreciate the logical structure.
Disadvantages and Risks of Fibonacci Betting
Bankroll Depletion Risk
The primary danger of the Fibonacci system is that extended losing streaks can rapidly deplete your bankroll. Consider this scenario: you're using a £10 unit size and lose 10 consecutive bets. Your stakes progress as follows:
£10, £10, £20, £30, £50, £80, £130, £210, £340, £550
Your total losses after 10 consecutive losses: £1,430. Your 11th bet would need to be £890 just to break even. Many bettors don't have a bankroll large enough to weather such a streak, and even those who do may not be comfortable risking that much money.
While losing 10 consecutive bets at 50% odds has a probability of only 0.1%, it's far from impossible. Over a betting career spanning hundreds or thousands of bets, such streaks will eventually occur.
The Gambler's Fallacy Problem
The Fibonacci system relies on a fundamentally flawed assumption: that past losses increase the probability of future wins. This is the gambler's fallacy—a cognitive bias that has destroyed countless bankrolls.
In reality, if you're betting on truly random events (like roulette spins), each bet is independent. The fact that you've lost 5 bets in a row doesn't make the 6th bet more likely to win. The odds remain exactly the same: 50% for even-money bets, 48.65% for red/black in roulette (due to the zero), or whatever the actual odds are for your chosen bet.
The system "works" (when it does) not because past losses predict future wins, but because you eventually do win—as you would with any betting strategy played long enough. The Fibonacci system doesn't overcome this fundamental reality; it just structures how much you risk while waiting for that inevitable win.
Limited Profit Potential
Even when the Fibonacci system "works," your profits are minimal. After a complete cycle (losses followed by enough wins to reset), you've typically earned only 1 unit of profit. If you're using a £1 unit size, that's £1 profit for potentially substantial risk. If you're using a £10 unit size, you've risked thousands to earn £10.
The risk-reward ratio is poor. You're accepting significant downside risk for minimal upside profit. Over time, this unfavorable ratio means that even small house edges or slightly unfavorable odds will grind away any profits.
House Edge Remains Unchanged
This is perhaps the most important disadvantage: the Fibonacci system doesn't change the underlying mathematics of the games you're betting on. If you're betting on roulette at -5.26% (double zero) or sports betting at -110 odds (approximately -4.55%), the Fibonacci system doesn't overcome these edges.
The system only "works" under impossible conditions: unlimited bankroll, perfect 50-50 odds, and infinite time. In the real world, none of these conditions exist. Your bankroll is finite, odds are rarely perfect, and you'll eventually run out of money or patience.
Common Misconceptions About Fibonacci Betting
Myth: The System Guarantees Wins
This is perhaps the most dangerous misconception. The Fibonacci system does not guarantee wins. It only guarantees wins under impossible theoretical conditions: unlimited bankroll and perfect 50-50 odds. In practice, you will eventually lose your entire bankroll if you continue betting indefinitely, just as with any other betting system.
The system might produce wins in short-term sessions, but over the long term, the house edge (however small) will grind away your capital. No betting system can overcome a negative expected value.
Myth: It Works Equally in All Betting Markets
The Fibonacci system is specifically designed for even-money odds (approximately 50% probability on each side). It works poorly or not at all for:
- Moneyline bets in sports (odds vary widely, rarely close to 50-50)
- Proposition bets (odds often heavily favor the house)
- Parlay bets (compound odds make the system unworkable)
- Specific number bets in roulette (much lower probability than 50%)
Applying the Fibonacci system to unsuitable betting markets dramatically increases your risk of ruin. You need to carefully select bets that have odds as close to 50-50 as possible.
Myth: You Only Need a Small Bankroll
Many beginners assume they can start with a small bankroll and use the Fibonacci system. This is dangerous. A small bankroll will be depleted quickly by the inevitable losing streaks. Most experts recommend having at least 100-200 units as a safety buffer. For a £1 unit size, that's £100-£200. For a £5 unit size, that's £500-£1,000.
Starting with insufficient capital is a recipe for disaster. You'll be forced to either abandon the system during a losing streak (defeating its purpose) or risk complete ruin.
Fibonacci System in Different Betting Markets
Roulette and Casino Games
Roulette is considered the ideal application for the Fibonacci system because it offers near-50% odds on even-money bets (red/black, odd/even, 1-18/19-36). The house edge of 2.7% (single zero) or 5.26% (double zero) is the "cost" of playing, but the odds themselves are as close to 50-50 as you'll find in gambling.
However, even in roulette, the Fibonacci system doesn't overcome the house edge. It simply structures your betting while you're losing money slowly. Simulations by mathematicians like the Wizard of Odds show that with a £10 winning goal and various bankroll sizes, the Fibonacci system in roulette produces:
- 91% probability of reaching your goal with an 11-unit bankroll
- 95% probability with a 19-unit bankroll
- 99% probability with a 142-unit bankroll
But these "wins" come at the cost of expected losses equal to the house edge applied to your total wagered amount. You're winning more sessions, but losing more money overall.
Sports Betting Applications
Sports betting is more challenging for the Fibonacci system because suitable odds are harder to find. Most sportsbooks offer point spreads at -110 odds, which is reasonably close to 50-50 (approximately 52.38% needed to break even). However, moneyline odds, futures odds, and proposition bets vary wildly and often don't approach 50-50.
To use Fibonacci in sports betting, you need to:
- Seek out bets with odds as close to -110 or 2.0 (decimal) as possible
- Avoid moneyline bets on heavily favored teams
- Focus on spread bets, total bets, or props with near-even odds
- Accept that suitable bets may be limited
Football and Soccer Betting
In football and soccer betting, finding even-money odds is particularly challenging. Direct win bets rarely offer 50-50 odds because bookmakers price in the relative strength of teams. However, you might find suitable odds on:
- Both teams to score (often near 50-50)
- Draw markets (sometimes near 50-50)
- Goal line bets (over/under totals, often near 50-50)
- Specific prop bets (depending on the market)
The key is to avoid being forced into unsuitable odds just to use the Fibonacci system. If you can't find legitimate 50-50 odds in your preferred sport, it's better to use a different betting approach or accept that the system won't work optimally.
Is the Fibonacci Betting System Actually Effective?
What the Research Shows
Mathematical simulations provide insight into the Fibonacci system's real-world performance. The Wizard of Odds, a respected gambling mathematician, conducted extensive simulations of the Fibonacci system on various casino games. The results show:
Baccarat (Player Bet):
- With 19-unit bankroll: 94.6% probability of reaching a 1-unit winning goal
- With 87-unit bankroll: 98.7% probability
- Expected loss: -1.23% of total money wagered (house edge)
Roulette (Double Zero, Even Money Bets):
- With 19-unit bankroll: 93.3% probability of reaching a 1-unit winning goal
- With 87-unit bankroll: 98.1% probability
- Expected loss: -5.26% of total money wagered (house edge)
These simulations show that the Fibonacci system does achieve its goal of winning sessions at a high rate. However, the expected value is always negative—you lose money over time, just as with any betting system applied to games with a house edge.
Real-World Limitations
The research assumes conditions that rarely exist in practice:
- Perfect 50-50 odds: Most real-world betting doesn't offer true 50-50 odds
- Unlimited time: You can't bet forever; you have a finite lifespan and patience
- Sufficient bankroll: Most bettors don't have 100+ units available for a single betting system
- No external factors: You won't face temptation to deviate, emotional pressure, or changing circumstances
In the real world, bettors typically:
- Quit sessions early when losing (defeating the system's mechanism)
- Deviate from the sequence when frustrated
- Don't have sufficient bankroll for extended losing streaks
- Face odds that are worse than 50-50
When It Works vs. When It Fails
The Fibonacci System Works (relatively) When:
- You have a substantial bankroll (100+ units)
- You're betting on true even-money odds or very close to it
- You have discipline to follow the sequence exactly
- You can accept small profits (1 unit per cycle)
- You're playing casino games rather than sports betting
The Fibonacci System Fails When:
- Your bankroll is insufficient (less than 50 units)
- You're betting on unsuitable odds (moneylines, props)
- You lack discipline and deviate from the sequence
- You need significant profits (the system generates minimal returns)
- You're sports betting and can't find suitable odds
- You run into a losing streak that exceeds your bankroll capacity
How to Use Fibonacci Betting System Safely
If you decide to use the Fibonacci system, follow these guidelines to minimize risk:
Setting Your Unit Size
Your unit size should be:
- Small enough that losing 10 consecutive bets won't devastate you
- Large enough that your eventual wins feel worthwhile
- Proportional to your total bankroll (typically 0.5-2% of total capital)
Example calculations:
- Bankroll of £500: Use £2-£5 units
- Bankroll of £1,000: Use £5-£20 units
- Bankroll of £2,000: Use £10-£40 units
Start at the lower end if you're new to the system. You can always increase unit size once you're comfortable with the mechanics and have proven you can follow the sequence consistently.
Bankroll Requirements
Before using the Fibonacci system, ensure you have sufficient capital:
| Unit Size | Minimum Bankroll (50 units) | Safer Bankroll (100 units) | Very Safe (150 units) |
|---|---|---|---|
| £1 | £50 | £100 | £150 |
| £5 | £250 | £500 | £750 |
| £10 | £500 | £1,000 | £1,500 |
| £20 | £1,000 | £2,000 | £3,000 |
| £50 | £2,500 | £5,000 | £7,500 |
These are minimum recommendations. The larger your bankroll relative to your unit size, the safer you are. Never start with insufficient capital; you'll be forced to abandon the system at the worst possible time.
Choosing the Right Betting Markets
Before placing any bets, verify that your chosen market offers suitable odds:
- Check the odds: Ensure they're at or very close to -110 (decimal 2.0) or 50-50
- Avoid moneylines: Unless they're unusually close to 50-50
- Favor spreads and totals: These typically offer -110 odds
- Research props: Some proposition bets have suitable odds, but check carefully
- Know the house edge: Understand what you're up against
For casino games, stick to even-money bets in games with low house edges (roulette single zero, baccarat, blackjack).
Setting Win/Loss Limits
Establish clear rules before you start:
- Profit target: How much do you want to win before stopping? (e.g., £50, £100)
- Loss limit: What's the maximum you're willing to lose in a session? (e.g., £200, £500)
- Time limit: How long will you bet before taking a break? (e.g., 2 hours, 50 bets)
- Streak limit: Will you stop if you hit a certain number of consecutive losses? (e.g., 8 losses)
These limits protect you from the system's inherent dangers. Even if you have a large bankroll, there's no reason to risk it all in pursuit of minimal profits. Set realistic targets and walk away when you reach them.
Frequently Asked Questions
Is the Fibonacci betting system legal?
Yes, the Fibonacci betting system is completely legal. It's simply a method of managing your stake sizes—it doesn't involve cheating, card counting, or any illegal activity. You can use it whenever and wherever you bet legally. However, legality doesn't equal profitability; the system is legal but not profitable in the long term.
Does the Fibonacci system work?
The Fibonacci system "works" in the sense that it can produce winning sessions and recover losses more efficiently than random betting. However, it doesn't work in the sense of producing long-term profit. Like all betting systems, it cannot overcome a negative expected value. If you're betting on games with a house edge (which is true for all casino games and most sports betting), you will lose money over time.
What's the difference between Fibonacci and Martingale systems?
Both are negative progression systems, but Martingale doubles stakes after each loss (1, 2, 4, 8, 16, 32...) while Fibonacci follows the sequence (1, 1, 2, 3, 5, 8, 13, 21...). Martingale escalates stakes much faster, requiring an enormous bankroll but recovering losses quicker. Fibonacci escalates more gradually, requiring less bankroll but recovering losses slower. Martingale is more aggressive; Fibonacci is more conservative.
Can I use Fibonacci for sports betting?
Yes, but it's more challenging than casino games. Sports betting odds vary widely and rarely offer true 50-50 odds. You'd need to find bets with odds close to -110 (decimal 2.0), which limits your options. Point spreads and totals typically offer -110 odds, making them more suitable than moneylines or props. However, even with suitable odds, the system won't overcome the built-in house edge.
How much bankroll do I need for Fibonacci betting?
The minimum is 50 betting units, but 100+ units is much safer. For example, with a £5 unit size, you'd need a minimum of £250 but should ideally have £500 or more. The larger your bankroll relative to your unit size, the better your chances of surviving extended losing streaks without ruin.
What happens during a long losing streak?
Your stakes escalate according to the Fibonacci sequence. After 10 consecutive losses with a £1 unit, your next bet would be £55. After 12 losses, £144. After 15 losses, £610. If your bankroll isn't large enough, you'll run out of money before the streak ends. This is the primary risk of the system.
Is Fibonacci safer than other betting systems?
Fibonacci is safer than Martingale (which escalates faster) but riskier than D'Alembert (which escalates slower). It's a middle-ground option. However, "safer" is relative; all negative progression systems are risky because they require substantial bankrolls and don't overcome house edges. None of them are truly safe in the long term.
Can I modify the Fibonacci sequence?
Some bettors experiment with variations, such as:
- Starting at a higher position in the sequence
- Using a modified sequence (e.g., 1, 2, 3, 5, 8 instead of 1, 1, 2, 3, 5)
- Resetting after a certain number of losses
- Combining Fibonacci with other strategies
However, modifications typically make the system less mathematically sound. If you're going to use Fibonacci, stick to the traditional approach. Modifications usually increase risk without increasing profit potential.