This is one method by Snowman.
Ok, here’s the quick script for winning using biased wheel play if you aren’t trained to quickly defect spot the biased wheels. For starters, forget everything you have ever read about or know about biased wheels, because most of it is wrong.
If you follow these procedures, you will win most of the time. The problem is, most people can’t stay focused long enough to do it. If you can stay focused, then you can win some hefty amounts of money.
If you can’t defect spot the wheels, then simply track everything in sight. This is a great way to get your feet wet. Start with low stakes only. Playing like this at higher units will occasionally get you banned. This is only an entry level method. If you want to move to the next level, you have to learn how to defect spot the biased wheels, otherwise you will likely waste to much time and money tracking random wheels. Defect spotting enables you to quickly determine which wheels are biased and which wheels to ignore.

Track every wheel in sight to 7,500 spins. Have friends and family help you track, or hire help and run it like a business. ( log any identifying markings on each wheel so that you can identify it and track it’s movement around the casino.)

Play every number that is in excess of 2 standard deviations using the modified Kelly Criterion. If you don’t have at least one number above 3 or more standard deviations, and at least one or two others above 2 standard deviations, then move on to the next wheel. If you have several numbers close to or slightly above 2. standard deviations, then pick the top seven.
Do not bet more than 10 numbers. The more numbers you bet, the greater the random fluctuations will likely be. Betting more numbers will increase the severity of random draw downs during play. You can’t win if you’re betting half the wheel!! You don’t have to be on every biased number. The numbers on which you bet just have to be biased.

The day of play, pretrack your wheel for 350+ spins to correlate with previous data prior to play. Peak pick your play day. Any number that appeared bias prior to play that is not close to, or above expectation prior to play should be dropped. If the data doesn’t correlate, try another day.

If you want the strongest possible chance of a positive outcome, then play for nothing less than 1216 hours straight. You have to allow for a significantly large enough volume of spins for your edge to dominate the random fluctuations of the game. Simply betting for an hour or two isn’t sufficient. ( For example: + or  2.5 x square root of N represents your ave. fluctuations most of the time. N= the total number of spins played) Overtime you will learn when favorable playing conditions are occurring or fading and you will want to adjust your playing style accordingly.
Bet using the following bank to bet calculation:
Edge/expectancy x the chance of losing your bet at each spin. Multiply this amount times your bankroll each spin. (I added the additional step to the Kelly criterion to reduce the over betting that can occur when the player is betting on several biased numbers).
For example: if your edge is 15% on five biased numbers, then you would calculate your bet as follows.
.15 x (354)/5 x 31/36= .02
If your starting bankroll is 500 units, then multiply the .02 times 500, then divide by 5 to determine how much to bet on each of your five numbers. 500x.02/5= 2 units on each of your five biased numbers.
I’ve just told you how to make a fortune at the game. Will anyone try it? Not likely. 99.999% of the people lack the discipline and the focus to win. Most people will be distracted by the WDL’s of the forums. If anyone does have the focus, then email me your data, and I’ll run it through the different statistical tests for you for free. If you are into tracking wheels and want to take things to the next level, then feel free to email me. I enjoy discretely talking about the wheels and exploiting the different design flaws.
Based on my experience, here is a quick note on sectors: Most individual biased numbers are part of a larger biased section. Many of the individual biased numbers that appear to be biased, are what we call temporary local biased numbers (TLB) within a true biased section.
When playing a biased section, it is often more effective to play in between wheel cleaning cycles when the TLB numbers are strongest. This will enable you to play fewer numbers within the overall biased section at a higher edge. Playing to many numbers within a biased section will exacerbate any random drawdowns that you may experience during biased wheel play. Since wheels are most frequently cleaned just before the weekend, look for your TLBs within biased sections on a Wed. or Thursday. On Fridays and Saturdays, look for the TLB to weaken and to spread over the larger biased section.
A quick note on mirror bias: It’s not your imagination, it occurs. Because of the many different factors that cause bias, you will frequently find patterns to the bias on the wheel. The type of pattern can sometimes quickly indicate the wheel defect. You may find a bias that appears every five pockets on some wheels, or one that appears 20 pockets away on another wheel. Some patterns are even just mere reflections of a bias defect that may exist on the opposite side of a wheel head.
I attach the topic where Snowman and Kelly speak about bias from the past at GG.
Bias topic Gamblers Glen.pdf (110 KB)