hello all: i have a 81 searay 17 ft that i just put new stringers,foam and new deck on. on the back of the boat was a teak swim platfourm just on the left side i took that off cause someone gave me one that goes across the whole back, on the old one had two brackets below the water line to support it on the inside i covered the two holes with heavy fiberglass and epoxy what do i fill the the outside with holes are only a 1/4 inch in dia. one hole is just in fiberglass and other is through transome thanks for any help in advance.