fiberglass repair who been there and done that

[el pescador]

on the gunnels top edges around the black rub rail there serveral areas with 6in. long string like cracks could be from contact hitting the dock theres 4 or 5 in a group at these areas if anyone knows what i'm talking about and have repaired these please inform me with the best way to repair down the road i plan to use awl-grip for the decks and gunnel....thank for your time...regards