The epoxy did not hold at all. So I installed two hatches to gain access to the back of the boat. Inside is a long narrow "backing plate" that the gudgeon screws into. There is a gap between the plate and the transom meaning that the custom screws I installed have nothing to tighten against, they just compress the transom. I used some of the hull material cut out for the hatches to make a wedge between the transom and the plate inside the boat and was able to tighten the screws. We'll see how long this holds.
Note: remove and grease your gudgeon screws often before this happens to you!
ps. the hatches are great and only took about an hour to install, if you don't mind taking a jigsaw to your hull.
Captain Han Winogrond, Sail Safaris Inc
Beach Cat rentals, guided tours and lessons
St John, US Virgin Islands
toll free(866)820-6906 mobile(340)626-8181