On the cover vs. don't cover debate:
Generally, I covered my last trailer with a tarp and bungee cords. Two winters I neglected to go through the process.
The amount of leaves & crud on the roof and ice damage where the exterior walls meet...
I bought a cover for the new trailer and it will be secured before the first hard freeze.
A cover is a whole lot cheaper than a new roof, A/C seal or corner bead replacement. As stated, it must be secured so it doesn't flap in the winter winds.
TT 2015 19RD "TheJayco"
TV 2003 F-350 "Montblanc" - Housebroken chore truck
Sitting in The Cheap Seats.
And proud of it!