I'm going to start keeping an eye out on CL for a trampoline. I had one growing up and jumped on that thing for hours. Not only will it help you with spins and grabs and what not, but it's just great exercise period.
"People say that marijuana smoking is going to get in the way of my career. I say to them that on the contrary, my fighting career is getting in the way of my marijuana smoking." -Nick Diaz