Hull Repair

Does anyone know what I would use to repair minor damage to a fiberglass hull? I have a 81 Wellcraft V-20 I would like to get in the water some year. I just noticed on the front of the boat, at the very front point, below the water line the hull looks worn. It is an area about 2-3 feet long, but only about a 1/4 inch wide. There is no paint. It almost looks like it was sanded off or rubbed off by driving the boat into sand or something. What I can see almost looks like cloth, I am assuming the fiberglass? Besides looking worn or scratched off, there does not appear to be any other damage. I am willing to bet the previous owner didnt even know it was there.

I am not as concerned with a finished look as I am in ease of application or quality of repair. This is just a fishing boat. ;D ;D

Thank you in advance,
Jason