This is a good exercise for yo-yoing beginners. It should be done with a very responsive yo-yo, i.e. a yo-yo that returns promptly, when the string is pulled. Actually this trick can even be done with kiddie yo-yos, where the string is fixed to the axle. In order to learn yo-yo control, try to do this throw fourty five degrees upwards (this way it is a precursor to Shoot the Moon) or downwards. Once you master this, you can go on to learn Shoot the Moon or Loop the Loop.