Can't believe you are putting up with this on your property, there are also liability issues if you let it continue. (I am an avid deer hunter and couldn't even imagine hunting on property that I didn't know the boundaries of) Collect his stand and leave a note explaining the reasons why and where he can claim it. Honestly, I wouldn't even be that nice, he knows he is not supposed to be there. If you are really serious and want to catch this guy trespassing, there are game cameras that are wi fi and will alert you and send and images to you real time. You can simply call the police or game warden when you get his image and get him red handed so to speak. (I have personal experience with this working)Deer stand is on my property and area where deer would be targeted would almost certainly be as well. Hunter has to be coming in from west or southwest and walking across properties of multiple neighbors to get there. Vehicle is not going to be targeted. Simply introducing myself should resolve problem. I could take the route my brother does which is to collect tree stands. This is a recurring problem around here that gets really interesting during rifle season. I almost have to wear orange just to work in yard but that does not really help with the projectiles have reach well beyond what the hunter can see. Shotgun and muzzle loader seasons are much less of a concern.