I put a blue tarp over the Adco breathable cover.
The blue tarp covers only the roof and part of the sides, front and back. Amazon has a selection of different sizes.
This lets the camper breath and keeps rain from puddling on the roof.
Wind gusts will billow the tarp and flip any accumulated water into the air where it gets blown off.
I don't tarp it down tight all over. I want it to billow - only tie it down at the corners and at one point in the middle.
Blue tarps are cheap and I replace it every two years.