I have never understood why any sports book would want to become affiliated, unless of course coerced to pay up.

Granted I'm from Louisiana and since there is no LCN here I wouldn't know first hand on the kick ups that the books do up north but I wouldn't feel comfortable having to include others in a Gambling Operation.
1. You gotta worry about them stealing or skimming off the weeks take,
2. If they screw up a bet by either not giving the right spread, your still binded to that if the bettor win's big.
3. The more people involved that's the more ways the profit has to be split, which means thats the more customers that you have to take in, which means a bigger chance youll get caught.

Just my Opinion.....