I have a 6m fibreglass half cab, about mid 80's model, and I have noticed that the gelcoat has worn away where the boat sits on the keel rollers of the trailer. The areas of wear are about 1"x2" in size. Has anybody else experienced this problem and have any suggestions on how to stop this from occurring. Also repairing the gelcoat I was going to clean the area with acetone and then fill with epoxy. Should this be adequate. Thank you in advance.