Does that brella a reflective covering on it?The problem i have with most of them is with out a breeze it gets like an oven . Am working on a project to solve that,will let you know if it works out.
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A 12 volt fan works good when there is not a breeze. Get one with the metal blades though and not the plastic ones. NAPA has them.
The pole is telescopic, but will not articulate. With it being 9' across, I can just move it front, back or middle of the boat to throw a shadow where I need it. I think it will be fine in a pretty stiff breeze, there are self deploying flaps in the top to let wind through.
nice, feelay. you have eye bolts in different places on the rail ( back, middle, etc.) for moving it around?