Hog, if he has any strenth on his right side, have him try to shoot from that side. Tell him it will help his brain. He doesn't have to do a ton of them, because that will just frustrate him, but once in awhile have him try a couple. Anytime you ask your brain to do something it isn't used to doing, even as little as walking backwards or using the other hand to write, you are building new neural pathways. Studies have shown that people who have strokes or brain trauma can shift certain tasks to the uninjured parts of the brain that were being unused. So, it pays to keep the gray matter elastic!
Heather