Me too Walt! My transom door would also swing open whilst underway which is not a good way to be motoring with kids on board! The wooden backing that you see behind my bolt is new. I added it two weeks ago with a view to fitting press studs (?) either side of the latch which would allow me to stretch a nylon strap across the latch, thus stopping it from opening (see sketch).*I got the idea from my old Sea Ray which was rigged like that. As it happens, the bolt doesn't open with new arrangement, so no need for the strap anymore!
The underneath hardware under the davit shoes comprises*a single reinforcing rod (made to measure by St. Croix, but adjustable) which is connected at top to the forward end of the davit shoe and at bottom to the cockpit deck. Whilst the transom wall is under compression, the rod is under tension, so there is a hefty backing plate at the bottom end of the rod under the deck. I hope that answers.
The teak block added under each davit shoe doesn't look quite as I envisioned it, but that is because the davits extend out parallel to the centreline of the boat rather than perpendicular to the slightly rounded transom. The workmanship isn't up to my expectations, but it never is! Note that I had grooves cut into the bottom edges of the teak blocks so that water could drain from one side to the other.
BTW, my cockpit*benches don't*wrap around. They are rectangular (actually slightly quadrilateral) and extend*from the inside coaming to the transom door.*They are in fact hinged boxes, so I keep cleaning materials in one and small collapsible coffee tables in the other.
The forward cockpit bench doesn't open easily - the lid always has to be lifted with two hands, which is a PITA... have you got a solution for that? It's design does not lend itself to fitting hinges.
Mark