I've decided to keep the usual system, which is divided on three different levels: Single Dime (3units), Double Dime (4units) and Triple Dime Play (5units). I feel pretty comfortable with this scheme and there is no reason to change it right now.
My recommendation is to use a peak reset system:
SINGLE DIME = 0.5 to 1% of the bankroll
DOUBLE DIME = 0.75 to 1.25% of the bankroll
TRIPLE DIME = 1 to 1.5% of the bankroll
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