I stopped doing the 2x play and started doing the 1.338 on BTC Dice today and instead of doubling you just quadruple.  Start with .025 bets or .1 depending on how brave you are.  I played it for an hour and won 2 bitcoins using .1,.4,1.6,6.4,26.6  @26.6 you would have lost 5 times and the odds of that happening are 1:841.  In the end I did play again and lost .5 bitcoins because I didn't want to wager a bunch but I feel like the risk is less mine.