Cheech,
I guess you right. Probably keeping them out of it is a better idea. Just the whole thing with the money. Yeah Maxims, Vizaballs, and Clear Plastics would be okay. Balls like the XXXL (Which I have) would be banned.
Milo,
That is interesting. I can't imagine everyone using the same ball in a league. Pretty neat idea. I am guessing people would need to put their initials on their ball. Finding your ball on the return could be a chore.