People suggest "no tresspassing" signs at the edges of our property. We've done that. People enjoy tearing them down and throwing them on the ground, and they also enjoy using them for target practice. There is one method of "posting" property that is supposed to be legal. It wouldn't be too expensive or difficult. Click HERE to read about it
Oh, somebody suggested electric fence around the property. Obviously you've never dealt with electric fence: In the first place, it's simple to lie down and crawl under it. In the second place, electric fence must be closely maintained. If branches fall on it, or weeds grow up on it, it no longer shocks. We're talking "in the woods" here, folks. Oh, and anybody with a pair of pliers with insulated handles could cut the fence. Electric fence is not a workable solution.
The thing is, even posting would do no good. It's one of the Redneck's inalienable rights: You can go anywhere you want to when you're hunting mushrooms. I think maybe it's stuck in amongst the Ten Commandments someplace. They might see the purple paint and be a little bit sneakier, but they wouldn't stop coming.
Yes, I do catch people all the time. But most are strangers to me, so how would I know who to take to court? Unless it was Marvin; and do I really want to take my next-door neighbor to court? Would you?