Also, just keep in mind that most bowlers are very cheap, so even for small stakes like $5, some won't like it if they feel like one of those formats (scratch, handicap, pins over) doesn't suit them. If I did this at my center, I could easily see guys not getting in because they would claim that it's not worth paying to be in all three games when they are only likely to win one of them. I think your idea is okay, but you have at ask yourself about the bowlers you're dealing with.