I want to thanks for all the help from here on my trailer bolt pattern.Im new to boat owner ship i just bought a 1973 18 ft cobalt open bow.I would like to fix this thing up i was wondering if any one had some pictures of what this old girl is supposed to look like.From the pictures on the web mine has a line of fiberglass that starts about 16 inchs in the back and goes to a piont in the front as far as i can tell this is just on a 73. Any help again would be appercative thanks again