Ouch! I'm sorry that happened. Probably hurt the guy who hit it, too.
Hey, this part is a pretty good candidate for a repair. The structure can be patched from behind, and you have only one major crack in the gelcoat
. A quick answer here is not adequate to lay out all the steps, but the only challenge I see is in matching the color of the new gelcoat
so that the crack disappears. You might want help from a fiberglass
guru on that, but the rest looks like it is DIY