I'm doing a project boat and I looked under the transom area right before the eng and I can see light from the sun. After looking at it from under the boat the gelcoat is gone. Looks like it chipped away. Its about 1/4 inch wide by about 1 foot long.. It still seems strong as there is no weak point.. Should I reglass that area? If so should I do it from the inside or the outside? Any other quick fixes? This is just a 18 ft ski boat with a 460 so no big HP. Thanks for the help.