Hi Nigel ... thanks for the thought. This kind of heat is so rare in the Pacific Northwest that I've never seriously considered the tent approach. However I'm occasionally offered big bucks to build high end decks in horrible places like Hawaii and Arizona. I turn those down.

By the way, am I the only one old enough to remember the canvass water bag we hung from the radiator filler cap on the trucks. As we drove, water would seep through the canvass and the evaporation would definantly cool the water. "Cool Water." Hey, that might be a good title for a song! CHEERS, Bob