Piter

I echo this. I am a high handicapper as well (21 currently) and the only "fitting" I would do is shaft length and lie (I am 6'4"). But you can use the Ping chart for that for a start or other manufacturers' online tools.

Lost balls is the killer and that usually happens with the driver.

I play in hot humid conditions (south Pacific) where the cool season is around 25 degrees centigrade and during summer around 30 degrees. Day before (well, every day really): drink till your pee is clear - that way you know all your cells in the body hold as much water as they can. During round, I drink 2 big gulps at every tee off. That ends up being 3 liters of water per round. Might get a coke or so halfway if I want some sugar or just something cold. Personally I think electrolytes drinks are overrated - it's mainly salt loss that makes you feel weak. I bring salted peanuts, crackers, pizza slice or whatever with me. Potato chips good too. Gatorade has 21 grams of sugar per serving, that's 10 less than a can of coke. If sugar is an issue, leave it. Lots of other chemicals in there too btw: