I don't know if this will help as I have not used it on coverite or rustoleum. I have repaired sig Koverall painted with krylon though. I was able to patch over the Krylon with sig stix it and more Koverall, which I then doped and resprayed the area with krylon. I first tested the products on a sample to see if the paints would work together or bubble up.I was a little concerned that I would not be able to fix with the krylon, but it all worked. I have done 2 repairs to this plane and need to do a third as I screwed up a take off a while back. the original covering job was Koverall applied with stix it and then doped before spraying with rattle can Krylon. I found the best results without primer as it made the paint thicker and more brittle