I don't live in Michigan but cover mine with a Sunshield tarp (black on one side and silver on the other) and hold it down with several boat fenders half filled with sand. This I have done for its lifetime.
There might be a better way to hold it down. I'm thinking of tying a rope from a grommet on one side under the rig to a bunge cord to a grommet on the other side. The bunge cord keeps tension. Haven't tried it because the original idea works for me but it is next to my house so I can keep an eye on it.
We put the black side up in the winter and the silver side up in the summer.
One potential problem is if a grommet pulls out.