So when we started playing bike polo a few years ago, we played with mallots that were pvc pipe attached to the end of a golf club shaft. We soon realized, new as we were to the sport, that we could scoop the ball in the end of the pipe and do all sorts of crazy moves and ****, dragging the ball behind the rear tire so that you could avoid opposing players on either side was the favorite.
We soon decided that this was no longer legal on our polo court. It made it too easy for players to traverse the entire court without passing. The next few times we played, we were constantly reminding each other not to drag the ball, at which point this conversation happened with a new player arrived:

"Hey, no draggin'"
"Huh? Whats a dragon?"

End