you cant stop people from putting stands up just outside of your land, but you can ask people to leave if you catch them and you can get them for tresspassing especially if you have signs up notifying people ahead of time. But when you are not there, theres nothing you can do about it. It is frustrating.
WWHunter, you're welcome. Its good to vent at times. And other things in our lives and make things like this more frustrating, so when you're frustrated, take a deep breath, slip on your hunting clothes, and slip into the woods!