What % of winnings reasonable for "backing" someone?

[dknightx]

ok ... considering he probably will never lose money (clearing bonuses on .5/1), your point is moot. It was merely a mechanism to keep him from playing too loose. When you realize you arent really playing with YOUR MONEY, you sometimes like to gamble more.

Anyways, as stated before, your post is completely useless, as it does not provide any reasonable solution.