I've had plenty of success with the Martingale strategy on the Auto-bet option on Multiply BTC. Set ON WIN to Return to Base Bet and ON LOSE to Increase Bet By 50% (although martingale requires doubling) and start. Unless you're VERY unlucky, this will garner you consistent gains. But here's something you have to take into account: have atleast a 100,000 satoshi balance, and start betting with 5-10 satoshi per bet to minimize the chance of losing everything at once.
Sound smart!, But it doesn't work xD
Lets me asking something, how much red you got went you doing a gamble?
Around 7-10 times? with only 100.000 sats you can't really handle the martingale system, my most red reaching 20-25 times some of the people also got more than 35 times or 40. Doing an auto bet system, just need time until the red trains come to you that's why is not really good.