I used the Kryptonite Cable and a big Masterlock.

They actually cut the lock and stole the cable. I know this because they left the locks under the trees. (all 5)

I also had the Kryptonite cable with the lock built in. Once again, they cut right where the lock met the cable.

Next year I am buying a motorcycle lock from Kryptonite. You can't cut them and if someone is somehow able to get it off. Kryptonite insures you up to $1000 for theft. If you lose your key, it is kept on registry with them so you have to have them send you a new one.

It costs about $60 but it's the only way I am going to leave another one of my stands in the woods. Stands aren't cheap.