buckstalker I disagree with one point. Must falls happen when people are getting in/out of their tree stand or climbing in a climber. This time is usually when people are most likely to not be tied into the tree. I use a climber and am strapped in the second I step into my stand.

I dont know about the belt systems the key to not falling very far is to have the strap around the tree high enough that you have very litte room to move. I like to have my tether pick up when I get to the edge of my stand. Essentially I am on a very very short leash.