I'd make a sign for his trailcam.
"Dear violator, This being public land, you are clearly in your right to hunt from the tree I've been in for the last three years. But should I physically find you here, it's my duty to call the warden and inform him of your transgression. If the 50lbs of corn just accidentally fell out of your pocket, I apologies for my erroneous hypothesis. Have a great season."
