BasketWeasel, I can tell you how to stop the sign damage, just hang some game camera's on some of the trees near the signs, hide them well, and you will catch those damaging the signs with hundreds of pictures! The DOW catches Poachers all the time while using trail camera's, the police use them at construction sites and theives are caught stealing construction equipment with game camera's. Bass pro has them, and cheap! They have camera's that work well in the dark, and without any flash from the camera's.
Who needs a Rec District that does not have a recreation center? We can all just go move around the signs, jump fences, run and hide in the woods, maybe climb on rocks, fish, then vandalize the signs some more. Cheap easy and fun!