I really don't know where to start on this one.
First thing I will say is that being on disability and hunting does not make one a POS. If it does, I guess I am a POS. I know there are many out there cheating the system, but not all of us. Some people have more drive to do the things they love to do than others and find ways to get it done. Until you are in someone elses shoes I'd think before I type. No hard feelings towards anyone, just making a point.
Secondly, I feel your pain with sharing the property, the very reason I bought my own. Just because you have hunted a property for a while does not mean you can run the show. That being said, I do feel that the new guy should be considerate. I'd sit down with the guy and see what he is all about. Maybe he needs some educating. But, if he has that many stands at his disposal I'd venture to say he is not new at the game.
The only way that I see a guy can have property to himself is to buy or lease. Otherwise you are always at the mercy of the landowner.
Sorry Dick, I wasn't meaning ALL hunters with disabilities. I apologize if you were offended by it. IMO, this guy is not like you and IS one of the ones abusing the system though. I was basing my thoughts on the dudes treestand set but I could be wrong. If I am, I owe him an apology as well on the subject.....but not for being a tool and setting up so close to someone else's stand and not being considerate.
Owning your own land is the best way to remedy problems like this but you'll still have things stolen or messed with if you don't live on or near it.