Yeah if we hit 100 hear in Michigan its rare, but its not uncommon to be in the mid 80's. The deck is white with a light...light gray non-skid. If it were up to me i would say we don't need it but my wife on the other hand like the idea of cool sleeping conditions and even heat so we can extend our sailing season here in michigan. We just plan to use it on shore power here at the Yacht Club. You think i thin to run a seperate shore power cord just for the 16k unit though. I am looking at the 115v model.