Hey Guys, new here but not new to boats
If you really want to get it all off and not hurt the gelcoat, you can use somthing called Nutec, iis specifically designed for this task. I have used it for years ans you just brush it on,leave it sit, and come back with a putty knife and slide it right off. This is all we use now as it works so good. If yanyone needs any more info just let me know.
Scott