I prefer the loggy legend that is no longer made. You have to pick them up on Ebay. They played around twith the design a little so you need to know what to look for. What makes the loggy different is the fact it's only one piece climber (can be two). So it's very light and works well with a back pack. You attach it to the tree and then hook your feet to it and shimmy up the tree by hugging it with your arms. When your at yuor hunting height, the seat comes up and straps to the tree securely. It can also be used as a lock on.

Here is one of the first models. It uses the J hook strapping system.

http://cgi.ebay.com/LOGGY-BAYOU-CLIM...d=p3286.c0.m14

Here's another one with the built in seat chushion and climbing aid. I don't like the climbing aid.
http://cgi.ebay.com/Loggy-Bayou-Clim...d=p3286.c0.m14