Sand it sand it, its way easy to sand fiberglass, much faster than metal, so go with sanding, hard sand paper first, then down to a fine grit sandpaper to smooth it out, then prep for paint, and have at it. Dont use paint remover, i think it melts through the fiberglass...
voy can buy vette stripper at any good autobody supply store,sounds funny but is works just follow the instructions .we use it all the time at the restoration/streetrod i work in. bee cool.....john