I have a Summit Viper. The problem that I have is that my feet keeps sliping out of the straps on the bottom stand. Several times the stand will fall and keep me hanging in a tree with the top section, which is not a good thing. I have a rope that I the top and bottom section to keep the stand from falling all the way down the tree, but it is still a pain and alot of trouble to get the bottom portion up and back in place. I have a size 13 boot and don' t know if this is the reason. Has anyone else has this problem with their Summit? And is their any suggestion to fix this problem. It was always a pain to get my feet into the strap and place the bungee cord on the heel of my boot. Thanks.