Here's an easy solution.
Take one weatherproof "game camera" that you can get from just about any hunting store.
Set it up in a good, concealed position that looks right at the tree stand.
You've got pics of the idiots stealing your tree stand.
There was a big, fat old redneck caught stealing a deer feeder in Northwest Arkansas just a couple of years ago, just like this.
There was this beautiful picture of the camo-clad loser strutting along, dragging the deer feeder behind him, and it was splashed all over the local TV channels and even in the local papers.
He was caught, prosecuted, convicted, as well as embarrassed and humiliated completely.
I even know of folks who set up one camera to cover the tree stand or the feeder, and then a second hidden game camera to cover the first camera, in case anyone gets cute and tries to steal that first camera.
hillbilly