I have been working on my carbon spar the last couple of weeks. Sanded off most of the clear coat and sprayeddown a couple coats of Awgrip 545 primer in white, and filling all the holes with some filler. Then today I sprayed a coat of awlgrip in snow white. It turned out better than I hoped. Now it just needs time to dry. Thankfully I have the original alum spar as a backup and can still sail the boat while working on the carbon rig. I also have a non class legal carbon boom as you can see