This is only for discs really I can't imagine someone riding on top of a kamahamaha or w/e wave but with precise time you can jump onto a disc attack like freezas and krillen the disk will head back to the person who shoot it the person riding can shoot maybe limit attacks? maybe just melee but it cannot be exploded while the person is on it, once it gets close enough to the thrower it will disapere or something so you doesnt actually attack them feel free to add anything or take something out of this.