If you're winning, 10% is great...heh
If you're in for the long term, 1-2% should be just fine, with a "Unit" being equal to your Base %.
At an average of +1 Unit per day, you're making 7% per week compounded.
At an average of -1 Unit per day, you can lose for 2-3 weeks straight and still have over 80% of your starting bank.
At 2%, you'd be making 14% per week compounded which is of course Twice as Nice...but in the event of a 2-3 week slump, you could blow out almost half your bank.
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As for the note earlier that mentioned being able to "replenish" your initial bank, I humbly submit that this just means you have a bigger Bank, but all of it may not be in the hands of the Offshore. (presuming you are a PostUp bettor).
So if you have say, 10K offshore, you would play $100 Unit at 1%.
Knowing you have the ability to "replenish" with a fresh $2000 at most any given moment, you could modify your "true bank" to reflect $12,000 and use a $120 Unit.
RULE ONE...Always Protect Your Unit (Late Great Chris Thomas)