No, I haven't tried anything on it yet. Didn't wanna use any chemicals on it without knowing might damage the fiberglass. I know aircraft stripper is out. I'm not in a real rush, and expect to do a lot of scraping. Just wondering what might loosen it up to help it scrape off easier.Have you tried Acetone or another type of non-paint removing solvent to see if it will come off or loosen it? Next might be a wire brush or soft wire wheel.
Can you post a pic?
Someone also mentioned in the comments that Oven Cleaner might work. Dont know.