Herb, I have gone through a 43lb weight loss over a very short period of time and have blogged a few times on the method I used to achieve the loss. In my case, swimming was really important but I don't credit it as the method of loosing the weight. For me swimming faster was the driver for the weight loss, but the major method ofmloosingbthe weight was using myfitnesspal religously and controlling my calorie intake. I adhered to a strict but balanced calorie controlled diet, vitamin and mineral supplements and drank a ton of water. Good luck with the goal.