Winter Prep for TT

First, the bottom line as posted above is that you do not want a busted water line ever. Draining, blowing, RV anti-freeze are the solution to that.
Covering, Rule 1 is that you must have air circulation in the camper. So don't tighten it up so no air get in, otherwise mildew can happen. Living in MN usually means snow and now usually a rainfall or two. I used to cover, but we leave in the winter sometimes so that was a disaster. The top froze to the roof of the RV.
I guess that the person with pine needles and branches is kind of right, but if you don't have trees, as we don't have, it is okay not to cover, at least in my opinion. Of course if you cover, there is less chance of water getting in or creating a problem. Remember, RV sales lots don't usually have trees and they of course do not cover.

X2 on what SWD said.

You're going to want to keep the moisture down, I'd suggest getting a couple of tubs of DampRid (and a couple of refills too) and set them around inside the trailer. You can get DampRid at Walmark!

WoodGlue

Drain the fresh water tank, empty out the grey and black tanks, drain the hot water heater, open all taps and faucets, showers and low point drains etc and blow out the lines using an adapter on the city water inlet. After that dump some rv antifreeze into all the tanks and p traps run the pump till anti freeze is visible and you are done. Different variations exist of this procedure but in the end you need to get rid of all the water in your lines.

That question is the MILLION DOLLAR question.

So, I'd suggest this (or you'll make yourself crazy). Start by reading the winterizing section of your owners manual. THEN, I'd go ask a local RV dealership for your AREA what they recommend.

We have researched that information out for a couple months now, and it REALLY REALLY varies according to where you live. We were 100% convinced not to cover our TT this winter, and then out of the blue someone who lives in our vicinity posted that if not for his TT cover the top of his TT would be destroyed from all our falling pine needles, and smaller branches. We are in heavily wooded areas that can be prone to high winds. He's had no mold problems etc.

We have made ourselves crazy with this topic...lol Of things we have decided on - other then the full winterizing suggested in the owners manual for our TT is to put olive oil in the toilet bowl as it won't freeze, but it will keep the toilet ball seal from drying out over the winter. We ARE going to shut windows/vents up tight but LEAVE ALL CURTAINS UP so what little sunshine we see in the GREY winters of the PNW can hopefully thwart the mold. Also, bought a dehumidifier and will run that in it because of our high humidity. I may contact the people we bought it from too. They were locals and this 7 yr old TT was mold free,and spotless when we bought it.