I have a 1978 Oday 23' and it was damaged by a cracked pvc attached to the piling at my dock. At low tide the life line got caught under the pvc fender and at high tide the stanchion pulled almost all the way from deck. It is currently attached by 2 bolts. I need to repair the area. Area below the stanchion plate which was secured by the 4 bolts is now a hole. Any suggestions on how to repair would be very much appreciated. I do not think I can repair the fiberglass from below. Thanks.