SNIP>

>What about installing the solar fan in the skylight
>itself or a mounting plate custom designed to fit the skylight hole.

I did exactly that using a similar fan I got from ZomeWorks in
Albuquerque some years ago (they don't carry them anymore). I just
took a piece of masonite, sized it to fit the skylight opening, added
some velcro tabs to keep it in place, cut a hole in the middle of the
board for the solar fan and was in business. I use it when parked in
hot weather and just pull it out when underway.

Too chicken to cut a hole in my poptop,
waywest