Offtopic - but oh well...
The fog might really be salt, dried to the outside of your glasses/goggles. After about an hour of constant salt water spray, my glasses are worthless and I end up taking them off if I want to see anything past 20 yards.
I use rainex on goggles and sunglasses to reduce the amount of salt that sticks on them (it makes the saltwater bead up and fall off rather than evaporating in a film). I pour it all over the lenses and then dry it off with a paper towel.
I do suffer from fogging in light air conditions. I'm going to try anti fog the stuff divers use inside their masks. I borrowed a tub of an anti fog product called "catcrap" once. It seemed to work well.
