thanks Jonh Doe,
those points all make sense and kinda what I was thinking as well. I was mainly looking for a good time with my boys it could help us with our grabs since we are not quite at the spinning point. I have tried spins and will keep trying, the boys are working their grabs mainly. Your point of orientation in the air on spins off the tramp is a great point too.
I found this board designed for tramps, but it is way expensive $220, cool but to much.