Just bought our first new trailer!

As for my thinking, you can buy a 50 or 100w self contained solar unit for less than $150, be it good or bad in some folks eyes they will work for keeping the single battery toped off even on shady or overcast days, the 50w system on my Lance TC spoiled me because if I didn't need the A/C or heat I could camp for months with no shore power, LP was my biggest problem.

and I parked it under roof when not in use and the battery never was dead, It would get enough light to keep the battery charged.

I personally don't like running a genny so that could have an effect on my thoughts.