Fiberglass hood repair/correction question

I have used heat on a fiberglass trunk lid I bought for my '65 Barracuda. No aluminum in that thing. The back section was literally 1" out from flush on the driver's side. I used a propane torch/plywood clamped on the section (with care) to move it. It did move. I roughed up the inside, added fiberglass cloth/resin and it took a permanent set. Good to go to this day.