Jack, cool vid. Being a FL boy i have never played indoor tennis.
Your partner is not that good. What you should do when you play that person is practice punishing those moon balls by taking them earlier. I also think your follow through looks a little awkward and tentative, but i am not a tennis coach.
Please help TT Member BruceD get a wheelchair so he can play tennis again - http://tt.tennis-warehouse.com/showthread.php?t=496820