pallets (x2), video camera, someone better at gapping that you, tape measure. film your gapping technique, film the person better than you (helps if you both ride the same wheel size bike, the technique for mods and stocks looks different) move the pallets further out each time, set yourself a target, it makes a difference when you see someone doing something you can't do, then you know it's possible get them to watch what your doing, experiment with tyre pressures, and look how some of the big riders do it (damon watson, tra, etc)