I have this same issue with a particular partner in both 2 and 3-whistle. I will mark a three point try in my area and watch the shooter back to the floor only to see him doing the same while ball watching. I've asked if he is watching the shooter, and if so, who is watching the other eight players try to rebound the shot. He says he isn't watching the shooter back to the floor, just marking the three point try.
