I'm starting to mock up something between the sit drag and the kestrel and incorporating a rock harness as the fail safe. The thing I see with my climber seat( having used it now it's not all that they make it out to be)is that the climber seat and the sit drag don't do much to relieve the pressure in the middle of your thighs and that makes my legs and, ahem, other pelvic areas. I want to be able to sit comfortably so I'm trying to incorporate that into my design. I'll have pics as I go, unless it terrible, then we never had this conversation