you did the right thing first: more storage, i.e., batteries!
now, you can simply add several 100w panels to the roof(beach camping will give you some good sun hours), run the wires down to the simple pwm controller, and then attach to your battery bank - done.
then you'll see the sun help charge the battery bank during the sun hours, minimizing generator run time. When you see it working, add more panels, upgrade the controller, etc.
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the Turners...
two Campers, two Electric cars
former diesel pusher traveler
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