The talk of fogging windows reminds me, To avoid foggification I'll open the side windows which is great unless you have waves and wind blowing water in the window. I've been looking and trying to figure out a way to mount some kind of plexiglass spray shield on the window but have yet to stumble on a neat way to do it. The other day it hit me, they sell vents (duh) I could install one then leave the windows closed. I would still like a "ventvisor" type of device on the window..but...anybody have any thoughts on vents, make, model, size, installation?