I have used the 2 part foam kits there okay. Has anyone any experience with the more expensive bead kits. My foam seat is nothing more than a small bit of foam around and between the legs and 1/2 way up my back. It's pretty flimsy due to its small size and the hole in the bottom were my butt needs to be sitting on the floor.
Are the bead types stiffer? Stronger? Worth the extra money? Has anyone tried to cover with some kind of fabric as opposed to duct tape?

Thanks,
Chris