and a point of advice...kick magnifies with speed...so if you need lots of speed, you need a huge tranny...we built a step up at my friend's cabin, tried it, it kicked really hard, so we dug out the inrun a little, tried again..etc....we ended up with a 30 meter long trench, 1 meter wide and 10+ feet high so that we had a smoothe transition...it would have been easier to put the jump somewhere else