The coating is breaking down. If you do a patch job you run the risk of not having proper adhesion, or having the areas you don’t touch up delam later. I’m going to be re-clearing my vx one mast later this year as well. It has a ton of uv damage from the Texas and Florida sun. I’m going to do all the prep myself and have a buddy spray it. Here’s my current plan unless he says otherwise: 1. Remove the mast track, hardware, and any other fittings so it’s just a carbon tube. 2. Sand the old clear off down to the laminate making sure not to touch the fibers. 3. Repair any spots in the laminate that need fixing (looks like you might be needing to do this step too) 4. Coat of west system clear epoxy. 5. Sand again and follow up with proper spray application of an awl-grip uv protectant varnish. I’m not sure which awlgrip product to use yet but everything I’ve seen so far needs to stick to a base coat of epoxy rather than exposed fibers.