I grew up in the sticks of Montana and this guy learned me that no man worth his salt wears a straw hat.
Maybe these guys feel the same way
I don't screw around with salt either: Lite Salt is half and half KCl and NaCl, cut it with sea salt and you're about 2:1 NaCl to KCl, same as commercial rehydration salts.
IME heat and sun ain't near as bad up here tho as it is down in Texas.