I had moderate success repairing areas on my van where the clear coat failed. The hood and upper rear quarters. I did minor prep work, cleaning, wet sanding, then sprayed with some 2k clearcoat in an aerosol can. Hood was the best, cause I could do the whole panel. Quarters were tougher, I used a natural body line for the cut in, and did a tape edge instead of trying to feather and blend. it looks decent, but obviously not pro level.
All in all I'm happy with it. But it's a 20 year old van that I am not going to be spending $$ on repainting. And it was only a year ago, so I cannot comment on it's longevity, other than it will last at least a year lol.