Use a hoover to remove teflon disc, dry out the area thoroughly then pour in about an old 35mm film container worth of epoxy. After it sets replace teflon disk and go sailing. A hatch installed next to the daggerboard slot will help ventilate the hull without suggesting a mast step repair.
I sold my 40+ year old laser last year and when I was offered a much newer hull, the new hull had some deck delamination and several small areas of missing gelcoat due to air bubbles from the construction process. It is an LP boat and it looks to me like the quality is far inferior, basically...