I have used a summit for 15 years, my only complaint is the shoulder harness when packing it to and from the hunting location. The stand seems to slide sideways on long hikes which is not fun in the dark and trying to be quiet. My father who is in his 70's uses one and has no issues, I would not have recommended it to him if I was not pleased with the performance.
My biggest issue was getting him to use a safety harness. Prior to retirement he was a general contractor. He has no fear of heights and still runs across steep roofs and such with reckless abandon. At least he Has acquiesced to using the harness.