I have had both shoulders done, one twice and one thrice. this is over a 16 year period. a year ago I had a torn labrum, rotator cuff, biceps tendon, and an A/C joint repair. your shoulders will hurt for months, esp at night. mine finally quit hurting after 8 months. make sure you are fanatical with that physical therapy. when its done, get in the weight room three times a week, and never miss a session if you can help it. even if they hurt. the paddling-specific exercises are obvious: bench press, overhead presses, lat pull downs, triceps pull downs or extensions, biceps curls, and lotsa rows. when I got back into my boat after PT, the difference was noticeable. after 5 months of serious lifting, its nothing short of miraculous. I hadnt realized that I was a one armed man. not only will you be a super strong paddler, you will greatly minimize the chances of re-injury. I know a guy that had both shoulders done at the same time, and I dont think he's recommend anyone be that radical!! good luck to you!