Got back to Cribbit at Marsh Benham. after two weeks to find my warps all awry and obviously re-tied. Closer inspection revealed a sorry tale, the stern, doubled up, pins had been ripped from the ground leaving a large hole and the gangplank and its pin stored on the roof. The oak peg used to secure the plank had been snapped off. Clearly someone had come past very fast to cause so much mayhem.
Set to to a bit of magnet fishing and was able to retrieve one pin, the thick one, but no luck recovering the other.