hobie 18 beam- hull damage

The fiberglass where the rear hull beam rests on -bolts to the hull continues to break off small pieces of the outter layer of the fiberglass. It seems to be making point contact and not an even distributed contact. I repaired it once with quality epoxy but that also chipped off. I'm thinking of pouring the whole seating area with epoxy while trying not to get the epoxy on the hull bolts.
Has anyone else seen this problem, how do you repair it?
I have heard of people loading up the seating area with epoxy then using wax paper and the cross bar you lay it in there for a tight fit. google the net for more info...