I made calculation yesterday..I wagered total over than 1.2 bitcoin in the last 3 week. I am still in positive cause of on last betting session, martingale strategy added to my money management. Martingale is risky strategy, but if you know what you are doing, you always have better edge than other gamblers.
Martingale would really be helpful if you do really know how to use it and how you gonna control yourself on using it.Most of the time martingale doesn't work if you do make use of it for a long periods of time.You are lucky enough that you can able to maximize the usage of martingale on any games you do play and same as yours I can able to win some amounts on using it too.It does need some strong discipline into yourself.