Originally Posted by Boler77
... A razor may scratch you finish but be helpful in lifting off big glops of silicone. Mineral spirits on a cloth worked the best for me. ...
Yes a razor blade will scratch the gel-coat if you are not careful, but it can work to safely get off the majority of the silly cone caulk off, but only if you are careful. Then, various solvents will soften the silicone, mineral spirits and pro-strength "Goof-Off" being two good choices. Soaking a rag with them and leaving them on the caulk for a few minutes is sometimes suggested. Then use soft tools such as plastic knives to scrape away the rest (without gouging the finish). It will take some time and effort. Last, I would use acetone on the gel-coat (but nowhere else).
It is mostly mechanical removal of the caulk (elbow grease) along with softening the most stubborn bit that never seems to want to come off.