If you are limiting divisions, I think friction, air operated and locator should cover all of your bases. Unfortunately a box call will win the friction and a trumpet will win air operated. That's just my opinion, but point being is that one wouldn't feel they have a shot unless they make those types of calls,in turn limiting partisipation. I think if you do turkey calls, you have to have specific catagories........and there are a lot of types of calls. I for one would enter!!!! Hope you can get it going