Might not be pertinent to your situation--but if you have the room/space to build a canopy, you should be able to pay for a permanent cover with about 3 years of lot rentals, maybe 4. I am 73, and hope to get another 10 years with the Suites.
A simple peaked metal canopy 16x40 shouldn't cost more than $4500, if you don't put in a concrete slab.
But, then again, less than $100/month ain't bad for covered storage.
2016 Tiffin 40 QBH
2015 38RSSA, traded
2005 TK3 #1869, 10 yrs of memories,
2017 F450 KR--one more Ford is it
2009 F450 4x4-died; 2010 F450-retired