My strategy is to play at 49.50% win place bets.If win I don't make any change but if lose I just double my next bet. I make base of 11 before starting. This strategy works for me 99% because nothing is 100% in gambling.
Basic martingale..you will be busted for long run.
But if you say that it is working 99% for you, means that you're a wise gambler. You know when to stop before busted..
i think so basic martingale get lead to the busted but if you are lucky and have your lucky day with knoweledge when to stop before the house edge take back all your winning from you, that strategy works with only much big bankroll and very low base bet.
martingale betting system needs 2 requirements, first very very large bankroll, almost unlimited bankroll, because casinos own unlimited bankroll compared to ours. Second is very good luck, if you won a lot of money, you can try it, don't try martingale when you have bad luck, busting bankroll is too easy if you have bad luck.
Be careful when play with martingale system, it's bad for many people, many guys lost all of money because of it.