It's a hot summer, even on usually mild Lake Ontario! I got a flyer advertising 13,500 btu Duo-Therm and Coleman air conditioners for RVs and got to thinking that this might be a great, much less expensive than marine ducted system, cooling solution for our H356. I'd be interested in running it over our salon hatch -- AC only when plugged in at the dock.Does anyone have any experience using an RV air conditioner on their boat?What are the advantages and disadvantages?We're sweltering up North.