Update for any sanders out there, Citristrip will remove enamel paint without harming the fiberglass! I just bought a quart of this and brushed it on a small test spot. I came back 30 mins later and scraped 9/10th of the paint off. Wiped it off with some mineral spirits on a rag and about a day later there has been no damage to the fiberglass or primer. This is some good stuff!