Claim jumper?
I have a piece of property near here that I (thought) had exclusive rights to bow hunt. I have a written IDNR permission card so I know I'm good. The owner said "written" permission was new to him. He never mentioned any other hunters. As far as I knew I was the only one to be around his place or the next place over.
Someone went and hung a stand 40 yards from my ladder station!
Kinda along story I'll finish later. Got to get to work.