Why does everyone assume because the knee isn't touching the leg isn't doing anything. Stompgrip is to aid in stability while cornering. Is the outside leg holding me on the bike, no not really until you hit a bump mid corner. The leg is used to provide a stable platform. I personally use from my knee to about 6"back. Is this the absolute way it must be done, no the placement isn't as important as the use of it. Without using the legs you will never fair well at a track with a lot off bumps.