We slap a window unit in the companionway and get a nice tricep workout getting in and out of the boat. We want to go without soon as we leave the convenience of shore power behind. I reckon nudity is best and a lot of fun! Freaks out the conservative types, though. But, heck, that can be fun too.
I have also used a $8 1 gallon garden sprayer on high mist on deck for cooling. That garden sprayer is indispensible, it is also my pressure hot water shower. Just be sure to clip the wand and heat bend it for the more "creative" angles desired.
Please don't google me.