I recently watched a pair of 6.0 females in a final and one started popping up moonballs when she started losing badly. The other responding by hitting the first one back rather hard, thus encouraging a second moonball and immediately ran into the middle of no man's land to either overhead it or volley it into a corner. I think the fact that she was getting aggressive on the moonballs scared the other girl and she stopped moonballing.
Less work is to just carry a pistol in your bag and shoot him. With all the problems in the world today, we certainly don't need moonballers. I suppose this goes for junk ballers and pushers as well.
3X PK Ki5 315
Tour Bite Soft 17