Just realized, the iPhone close up I have of the stern was an un-flipped mirror image! Sorry
Back at my desk. The small holes were also covered with fiberglass there’s three more hidden under what’s left. For the life of me… if you look closely they were punched out from the inside. The torn metal was still glistening when I tore away the fiberglass.
Now that I’ve discovered, nearly, what boat this is (Crestliner Viking Deluxe - late 50’s?), it looks this one might’ve been turned into a workboat. The wood transom appears to be oversized and covers symmetrical large drill holes towards the top. heavy plank for the front seat supported something.
There used to be lots of small lobster boats around here, that were also seasonal draggers for bay scallops (until banned), all in the many salt ponds behind barrier beaches. This design would’ve been perfect for that.