When I first got mine, I thought I could improve on it. I came up with a nifty swivel seat and, against Davids recommendations, had him make my seat the taller version. Well, for the first month I used my swivel seat ,which worked great, but after using the the Pac Seat as David designed it, I realized it was more comfortable and functional just the way it came out of the box. Today I cut the legs and returned it to Dave's originally designed height. It is now perfect. Dave has designed and refined this seat to perfection. He has simplified it and removed every unnecessary ounce. From where I sit, the Pac Seat is pure perfection.