My Favorite Doubling strategy is this:
1) Buy 100M RSGP
2) Stake 100 M x 2 = 200 M
3) Stake 200 M x 2 = 400 M
4) Stake 400 M x 2 = 800 M
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You only had to win 3 stakes in a row to get up to 800 M,
that's roughly $60 into $450 in a matter of minutes.
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Not to mention you'd have to lose 8 times before you'd be out of the profit margin.