:cheesy:
So, if it were me, I might skip the fiberglass fix and try using JB weld instead. If you use more hardener in the mix, you can make it work more like a putty. You will still need to add a screen to the inside (you can buy adhesive screen at your parts store) of the top to help give it structure. I would just try to fill in the hole and not go too crazy out side of it. After applying the compound, you might be able to put some duct tape over it like a patch. This will help you to get it more level and smooth. Once dry, you can sand it down and paint. Fortunately, your top is black and it won't stick out too bad.
Granted, this is just a patch and far from body work. If someone were to look at it, you would see it but, at least from a distance, it wouldn't look too bad if not be unnoticeable.
