Just a question...why do both boards need to be accessible ("fixed or released") from both inside and outside?
How about fixing the lower board with a barrel-bolt accessible from the cockpit
, and the upper board with a barrel-bolt accessible from the inside. This way, you can secure-in-place the lower board from the cockpit
(good for inclement conditions, and keeping water
out of the companionway
if you take a wave in the cockpit), and you can lock-in the upper board from inside the cabin
, for security
If the weather
is truly fierce, you would have the c-way hatch
shut, which would hold both boards in.
Just a thought...