Ya' know,.. I was going to suggest that, or to use Enamel REDUCER. But I wasn't too positive if it would have TOO much "bite" for a gel-coat finish.After 20 years of detailing boats, cars planes and everything else under the sun except the space shuttle. I found that lacquer thinner is the best remover. No scrubbing with scuff pads, does not dry out your gel coat. You will find a discoloration to the gel coat if the stripes have been on there for a few years . Not much ya can do about those.