Documentation file complete. Going to test it and then if it works send it off to sail. Uses two spring loaded plungers installed into the side of the receiver using JB Weld'd threaded inserts. Any one see why this might not work?
-- sleepy echidna
Realised that the metal that the ball bearing is made of will be very abrasive on the mild steel bolt.
Option to 1) harden the mild steel bolt, 2) instead use spring loaded plungers with a plastic bearing.