Guys I hate to admit it but my solution to gel coat repair in Pensacola, Florida is the the local fiber glass tub repairman. I have two perfect matches that I did not have to worry about. Just paid the bill, less than a "C" note, and was glad to be done. They come prepared with their neat little kit with everything they need, finish in an hour or two and are gone. The boat repair guys charge way more and don't do a bit better. So check out the local tub guy in your area unless you just can't stomach the thought of a non-marine type working on your boat. It is hard for me to let others do my repairs but on GelCoat I yield to the pros. I am sure to be castigated for this but hey, it won't be the first or last time. Good luck.
Pat, Ladybug, Too