I use Morton's Lite Salt most of the time (on my food); I live in a fairly hot climate and need to maintain a good electrolyte balance.

Lite Salt is about half sodium chloride and half potassium chloride. It gives you a good balance of the two most easily lost cations. The taste is a bit different from common table salt but one gets used to the difference quickly.

Probably it would help to take a light-dose magnesium supplement also if you are doing day-after-day of sweating and drinking.