Going to the lake to see if my idea works
I have a Bimini Top on my boat. While it helps I still get pretty warm even when using it along with a portable fan. I got the bright idea to add a misting system to the top. Lowes has a inexpensive system for less than $20.00. I already had an areator pump that I am going to use
to supply water to the mister. Hang a hose over the side of the boat, turn on the pump and whalla a cool mist of water. The mister is said to lower the air temp by 20 degrees. I doubt it will cool the air down that much, but it should help some.