Do yourself a favor NOW and start looking for places that offer indoor storage. Some places may be heated others not. Does not have to be heated. Depending on size of coach, expect to pay 450-550 bucks from say Nov 1 to April 30. Place w/ a concrete floor is best along w/ limited access (owner of storage place itself is best VS a whole bunch people w/ access. Yes a cover (after initial purchase) is cheap compared to a yearly storage fee, but as you've read already, wind is a killer for covers on rigs. Plus w/ indoor storage, don't have to worry about the snow load unless the building collapses. If that happens, you'll have bigger problems. We've had our coach in sig since new in '05 and has never seen snow.
2017 F350 DRW XLT, CC, 4x4, 6.7
2018 Big Country 3560 SS
"The best part of RVing and Snowmobiling is spending time with family and friends"
"Catin' in the Winter"