The pogoboard - an interesting idea, but it doesn't work. The though was that if you counterbalance the downward momentum of the trucks with a heavy weight (see left) moving upward as the springs extend, the net momentum of the board will be "up" and the board will pop as you jump. As I discovered, such action requires your feet to deliver an impulse much briefer than humanly possible in order to get the thing off the ground.
Since the board lacks a tail, i just put a rope on it. now you can get it quite high :)
