This is the first year with my [new to me ] 2520 xl 225 yamaha and we love it . We have it in a slip and spend most weekends on it with the dog and the have been a few nights that it just gets real hot and muggy in the cabin . This past weekend I made up a heavy duty extension cable and ran it under the port side gunnel into the cabin where I bought a portable a/c unit from bj's and it fits neatly under the port side seat and out of the way. just need to vent it out the side by the area where the steps come in with a dryer style vent with louvers ,and it works great. added a power strip and have the coffee maker all set up for the morning . Took it out this past weekend and it didn't move around at all so no need to permenantly mount it in place.