The above lok on has a chain, but I'm sticking with the rope...like I said that's a buddies modified version....mine are up a tree. Now for my favorite stand...I call it the wedge.I think basspro or cabelas sold something similar called a crotch stand. The pic shows the hinges and as you might expect it wedges tightly into the fork of a tree. It puts an awesome bite on the trees. I like it because you can lean on either tree and have good camo from two sides. Also, it's light and cheap ~$15....depending on the hinges you use. I prefer some quality hinges and boltthem on if I usea wood platform. I have ametal all-weldedversiontoo....it must still be up atree....I'll find it next season I'm sure. If you use wood, I prefer atreated 2x10 or 2x12. The key on wood is to put a piece of all thread (5/16) all the way through the platform on each side ofhinges (across the grain of the wood. This prevents splitting and if itdoes crack it won't break in two, plus you can tighten it periodically if asqueak develops. Wood get slick, so use some nonskid tape, or fix a square of expanded metal on the top. I know you all are thinking "mouse trap", but I love em' both. I can build about 15 stands for the priceofone climber. And, using one stand or the other, they will fiton most any tree...for the lok on you only need an 8" straight section of a trunk.I'm stillyoung, 28, so I still climb pretty well, I'm sure these wouldn't be the best for everyone, but it's what I prefer.I stilllike standing on a goodsolid oak limbvs. anystand.