Marco,
Sorry about posting, but I thought it would help work out some details. I understand that you don't want to go to the trouble to organize a catch and release only tournament for the expected number of anglers that you'll have. However, even if you do get only 20 fishermen, and have a 3 fish limit, that's till 60 fish off a spot if the fishin is AVERAGE. It doesn't take much to catch 3 calico bass in a day. I don't want to say this, but if you're not going to even attempt to keep some bass alive, I don't think I want a part of it. Don't take it the wrong way, it's not about you, or anything like that. "It's not you, it's me" lol. It really would not be that big of a deal to have a catch and release policy. If people want to keep their calico bass, they either don't fish the tournament or deal with the fact that that isn't acceptable that day. I personally think it's the best way to go for the anglers, the tournaments, and the fish. Check your email (sometime, my internet's down right now).
-Brian