I decided to pull the trigger and install a bilge heater this year, Can I simply plug it into my outlets and leave outlet switch on from panel (which will have shore power and battery charger on only)? Most likely going with Twin Hornet which is 115V/700W. I can go direct to main power with 30A to 115 converter if needed. I have outlet in my cord compartment and would be easy access. Just trying to avoid as many lines as possible exiting the boat.