I've been trying flatspins on a trampoline for a while now, and I can't get them. I can do the set to the backdrop fine, but when I put in the extra rotation I end up spinning out of control and into a cork motion. I can do backflips, frontflips, corks, mistys, etc, but cant get the flats. Anybody have any advice for stomping it? Anything will help, and thanks a bunch