I use the Niff-T-Seat. I have2 of 'em, I agree with Doc Nock, the pipes are a bugger to unscrew, so I keep one set low, one withthe longer pipe. Easy to carry, I just tuck it in the suspenders of my fanny pack, its out of the way, quiet and doesnt interfere with shooting if Im walkin and want to shoot a few judos, or in the extremely rare event I might actually walk up on a deer.
I find the best setup is whereyou have a tree you can lean against. I can sit on it for a good while, but with no ack support, I dont last long. Good overt all seat. I like the looks of that Waldrop seat, but at that price, not gonna happen.