Is there anyone here doing this? I have a 26' cruiser with a Mermaid
Marine A/C unit (6500) btu. I only want to use the air on the water for
about 4 to 6 hours a day and maybe an occasional over night stay. I am
looking at a Prosine 2.5 and will probably use 2 or 4 optima batteries.

Any input would be appreciated

Ronny