LW tree sticks are very fast to take off and put on the way you want to use them. I don't go as high as you so I use only three sticks. However, it's very easy to take off the bottom two as I decend the tree and take them with me. Likewise, easy to put them on. Can attach both sticks from the ground, the upper one loosely. Then, just get on your first stick and take a step or two up and position and tighten the second stick and you're ready to go.
Regardless, if somebody discovers your stand and really wants it, he'll figure out a way to get it. I chain and lock mine in as well. Haven't had one stolen yet because I usually set up pretty far from the beaten path, but just figure it's a matter of time.