Here's what should happen--and it's the way to really go after trespassers: Treat them like other game law violators. Many (most) states belong to a consortium where a game law violation means that not only do you lose your hunting privilege in that state, but you also lose it in all others that belong to the consortium. Take away hunting privileges for the remainder of the year, or perhaps longer than that depending on the nature of the violation. There's also the possibility of confiscating guns and vehicles used when you violate game laws.