Don't use gasoline as a solvent, particularly around a boat.
I agree w/Don; acetone is the stuff. In fact, acetone will take off almost anything that isn't permanently attached, although nothing seems to work on urethane adhesives like PL5200. Acetone was great for removing the duct tape residue which remained from my field expedient repair. You also want to use it on the entire surrounding area, before starting the repair, to get off all the residual wax, etcetera. Guess it's too late for you on that one. Gasoline is not good for this as it leaves an oily residue. Also, the fumes can end up in your bilges waiting to blow up your boat. Acetone is highly flammable, but it evaporates almost instantly, is safe to use indoors and the fumes are lighter than air so they won't end up in your bilges.
Don't use those stupid big yellow rubber gloves. They never fit right, they leak, they're worthless for delicate work and they make your hands tired. Instead, go to a drugstore and buy a box of latex medical-type gloves. They come in boxes of 100 for about $5-10. Make sure you get the right size for your hands so they fit snugly. They're used on either hand, and once you get the hang of snapping them on, they work great. They have a rubber band which makes them tight at the wrist so nothing gets inside. You can get them powdered inside so they go on easier and if your hands sweat it's not a problem. They're surprisingly durable. When you're done, you just peel them off and toss them in the trash. I use them for painting and lots of other stuff besides fiberglass repair. One of the best inventions ever.
I'm done with the major portion of the repair to my boat after the anchor dragging incident at Key West.
(Crunch) I still have to do the gel coat and window, both of which are (hopefully) on their way from Blue Water Yachts. In the meantime, I used some regular black and white paint and except for the duct tape on what's left of the window, you can't easily see the repair unless you're up close. Acetone will take this off when I get ready to do the gelcoat.
The biggest problem I've found with fiberglass repair is that it must take place in weather in which you'd rather be sailing.
