It's a shame that you have to worry about this. It could be worst and in other countries you would have a lot of other things to worry about. The only thing I could suggest was lock ons and steps.

I prefer my climber but a freind has dozens of stands all over the county lock on to trees. He must do well against theft because every year he may take me to a new location with a comment like, you hunt in this area. I'll be accross the street. I have a stand I put up two years ago. I don't know if it's still there. After the hunt he'll confirm it was still hanging. For the steps he got a two part system, a screw anchor and a detatchable step. When you leave only a numb is sticking out where the step attaches.
The lock on can be any brand but I couldn't help you at all with the steps. I think the company he used went under but I thought anouther picked up where they left off. Maybe someone else has seen these types of steps around. Last thing is the fact it helps to hunt a very high hieghts 30'. That also is a detterent but also a must where I hunt do the the amount of deer moving through the area.

Good luck.