I've been testing this method in simulation mode for a couple of weeks with profitable results. I went live (real money) a few hours ago. It's based on the belief that online RNG will over a reasonable time, try to create spins close to the probabilities dictated by the math for each bet. I believe the RNG provided by reputable online software companies and certified as "fair" by third party auditors will accomplish this. I also assume the software isn't rigged by the casino to recognize betting patterns and adjust to them. Thus, the selection of casino to play must be subject to enough due diligence to satisfy yourself the game is on the up and up so to speak. And if you don't get the answers you seek from the casino, move on and find another who is transparent.
As a futures trader, I never employ a negative progression when I lose as a matter of sound money management and that rule applies here, too. This is a flat bet strategy. I don't chase losses nor increase unit size when I'm behind, which has yet to occur so far, but it could and will happen the more I play.
The starting bankroll is 72 units and each wager is 1 unit on one number only. Choose any number for the first cycle of play--it doesn't matter. If your number hits, place your next cycle bet on a different one. Likewise for subsequent cycles. At anytime you lose the 72 units, you're done for the day win, lose, or draw. Also, it makes sense to have a reasonable profit goal which, if hit, you stop playing for the day. Pressing ones luck and getting greedy isn't prudent in any game with a negative expectancy as far as I'm concerned.
I started my real money, first cycle round with number 18. It hit on the 20th spin.
Second cycle was 19. It hit on the 7th spin.
Third cycle was 20. It hit on the 12th spin.
Fourth cycle was 21. It hit on the 6th spin.
Fifth and final cycle was 22. It hit on the 29th spin.
This session took approximately 40 minutes winning 102 units.
Just dumb luck, right?