Originally Posted by NickC
Swim instead. Or use a kickboard if your strokes suck. Do a hundred laps a day, 3-5 days a week. Your knees will feel better and you will be fitter than anyone else you play.
100 laps but how many meters each lap? If its 50 or 100 meters per lap it is quite alot, at least in my terms. I would do less laps and complement with weights, some running (fats and slow), stretching, etc...