what is the optimal strategy for a 10% rebate

I have read the other threads about rebates and none of them provide an answer. The wizard indicates that there is a way to make it positive ev, but doesnt describe exactly how. The rebate I am looking at is for 10% of any losing session up to $1000. From what I read the wizard is saying to make as few bets as possible for maximum value, but I cant tell for sure. Can anyone show me the math and describe how the rebate can provide a positive EV? Is it better to make one max bet or a few smaller bets using reverse martingale? And if the only choices in games were 3 card poker with the best paytables or spanish blackjack with redoubling but bj only pays 1 to 1 which would be the best?