Over & Under Boing

If you really enjoy the classic Boing-E-Boing and have already mastered it 100%, you can continue with the addition of the Over/Under Boing-e-Boing, where the yoyo flies not only over your finger, but here and there and under it from both sides. Note that the whole trick is that it is not your left hand that moves, but your right hand, the one that you move up and down. When the yoyo is closest to you on the string during boings, put your right hand a little lower, the yoyo will then continue its boingy movement under your finger. When it returns as close to you as possible, put your right hand a little higher again. You must not forget to constantly make an up and down movement with your hand.