http://www.ilark.net/boat/boat1.JPG
http://www.ilark.net/boat/boat2.JPG
http://www.ilark.net/boat/boat3.JPG

Damn, how long have you been ignoring this? That's a lotta material that's
been scraped off. Get a fiberglas shop to fix it right and ask them about a
keel guard. That much wear looks like something besides the trailer was
involved. Do you beach it? All the more reason to look into a keel guard
of some sort. Then look at that trailer setup and see what can be done to
avoid wrecking it in the future.