Maybe I'm crazy...or just cheap
So cheap in fact that I bought a $95.00 Kenmore 5500 BTU AC at Sears and placed it in the companionway surrounded by foam rubber and a 7" piece of teak on top. I closed the hatch and within 30 minutes on a 95 degree day, the interior temp was 78. As long as we're docked, we're o.k. And who is going sailing on a 95 degree day, anyway? When it gets that hot, we just stay below and chill out with our TV and a six pack. The only drawback is that we have to use the hatch above the V-berth as our "front door". When it is time to sail, just lift the AC out, place it in the aft berth and get out of town. Ciao for now.