Has anyone have an air conditioning unit on their Vision 32 that can comment on where it is located? I'm looking to add a unit, but am uncertain as to the best place to put it. I'm leaning towards one of the aft compartments, but would appreciate any other insight. Also, what types of units do people have? I'm looking seriously at the Mermaid units; something like the 12,000 BTU model. Any experience here?thanks,matt