Indeed, you don't even need the new pivot point of the back of the board either. If you smack the tail but don't drive it down the board will fly up into the a

Indeed, you don't even need the new pivot point of the back of the board either. If you smack the tail but don't drive it down the board will fly up into the air because the ground is resisting the pivot point of the wheels but the sky is not. The center of mass will start a linear trajectory once the pivot is defeated and I imagine that the angular velocity at the center of gravity will be mostly preserved once it takes off... My physics are rusty.