Another vote for the HS Strut seat. I use the cushion in my vest for my back and actually add another cushion to the upper back on my vest and I have two thin cushions added to the web seat. Sounds like a lot of extra stuff, but the way I have it rigged it is easy to carry and IMHO you are a more effective hunter when you are comfortable. I know I am, I have 3 compressed vertabre in my lower back and without the comfort, I would probably never get anything.