Interesting posts. Here in NC, in order to file charges against a trespasser, you must ask him to leave and not return. If he comes back, you may go to a magistrate and file charges. It is a misdemeanor offense.
However, if the property is posted, no first time warning is necessary. A game warden can cite a trespasser on posted land.
Having said that, my hunting club has a bit over 7,000 acres of prime hunting lands leased. It is all posted. When we find a trespasser, we send him on his way with a friendly chat. We don't want him to set fire to our hunting lands, so we keep it friendly. Thus far, it has worked. We had one guy who tried our patience so we had the game warden pay him a visit. After explaing the facts of life to him, I haven't seen him on the place since.
If a hunter asks permission to hunt on our land, we charge a daily fee of $25. I have had some of our SGW members visit us and they, without fail, went home with game. We write them a trespass waiver which they can show a game warden if one is encountered.
I might add that anyone hunting on posted land must have in their possession a waiver (permission to hunt signed by the lease/land owner). Otherwise, if checked by the game warden, they are given a trespass citation and have to pay court costs to a magistrate. They don't have to appear in court unless they want to protest the charge.