One thought before you disconnect the batteries, we leave the solar panels exposed on both of our RVs and connected, via the solar controller, to the battery sets. The panels keep the system fully charged and, with a quality controller, can be prevented from overcharging the batteries. Those fully charged batteries can then be left in all year (as long as you clear the snow from the panels periodically.) Really depends on how you have them wired into (and out of) the converter/breaker box.
If covered, make sure there are no "flapping" materials that could collect dirt and then scratch or otherwise damage the surface of the panel(s)
We are certainly lucky to live in Colorado with such great sunshine for powering those panels!
2016 Pendleton #006/100 (sold)
2017 Lance 1062
2017 RAM 3500 6.7d Dually LB
If ignorance is bliss, I should be a lot happier!