I lock my stands for sure using bike locks (cable)Here if they want it bad enough they will cut the tree down.
My groundblinds are what I worry about.
I have 5 of the doghouse style and 1 GroundMax Vision which is a good bit bigger.It's SO easy to steal them.Each one has a nice chair and a quality camera tripod.
Some have Cat heaters in them.It adds up to years of collecting equipment and it would be hard to replace it.

I never leave the bags or anything so if they steal it they will have to hold it shut coming out of the woods.