We have 2x 100w semi-flexible mounted in soft frames (sailrite does an excellent tutorial on this) on our Bimini since March and have been out on a few week long cruises since then, I can pleasantly report not running out of juice. We have 2x 8D agm batteries and also have autopilot, an isotherm cold plate, etc.
No TV and no AC (as we're in the PNW).. but I can charge my drone, laptops, have enough left in the morning to comfortably fire the diesel hot air heater, and even on overcast days, seeing about 30-50w each panel.
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