Sounds like the guy that stood next to a "No tresspassing" sign at my property line and used his son to fetch geese that he shot over my field. Call the game warden. It's even better if you have a cell phone and call when the guy is trespassing.

If you pull something like the tire valve trick I'd check every nail/screw etc. on my tree stand everytime I went out. This guy sounds like that's the way he would get even.

Dan O.