I agree with Don on his list of good cartwheelers. But just like these boats opened up the world of cartwheeling to the average Joe. The "Spuds" open up the world of air to the average Joe. I would encourage you to not get a boat based on how well you can flatwater cartwheel it, because there is a whole other world out there that it is incredibly fun and only accessable with some volumne that makes flatwater cartwheels a bit more balancy.
friend of the fork, knife, and spoon