"Make sure your property line is posted according to regulations so that there is no doubt that he is knowingly trespassing. Yea I know he knows but if you catch him doing it again you want it to be so solid he has no way out on any technicalities." -
Definately great advice. Cover all bases and then prosecute. Here in Indiana there are laws in place to protect hunters from being harrassed while in the legal pursuit of wild game. I feel for you man. That would totally piss me off too. If someone came onto my property and did something like that I would probably be the one going to jail. But don't do anything rash. You don't want to lower yourself to that a$$holes standards. Hope you get things worked out. Until then hang in there dude.