Removed very old gelcoat that easily before, but no power tools needed. Just a paint scraper and next thing you know it's 4AM and you're still laughing at the gelcoat easily falling off.
It's amazing that particular glider could still fly with the unlogged amateur combat repair found under the gelcoat on one wing.

Unfortunately Uncle Fuzzy isn't around to comment on his technique used in the video. I did get to fly that glider prior to refinish and with him after the refinish. Before refinish you could easily cut yourself on the cracks.. Pieces of gelcoat would come off if poked. Nice job.
Jim