The answer is not simple, Pete brandt is the inventor of the "crackpacker" However the original was no handed pinching the seat/frame with your knees. nowadays a 'wheelchair glide" is what is commonly refered to as a crackpacker. How's that for an Old Man's memory?
I was going to say Pete, but I did not know the info in the previous comment :)
Pete Brandt while he was on Ozone.