Glenn Ashmore wrote:

Evan,

You really should invest a couple hundred bucks in a Fein Multitool and
an offset carbon steel blade. It will cut glass right up flush with the
hull and sands better than any of the other tools I have. It is by far
my favorite power hand tool.

I've found that the carbide tile-cutting blades also make short work of
fiberglass and it won't dull them.