Andrew,
I am interested in hearing about using the smart lock system with a rudder setup that doesn't have "ears". Do you have further details ? I still like the rudders without "ears" so that you can rotate them beyond vertical and not have to worry about them unlocking themselves when beaching in any sort of beach waves.
I have been using a shock cord locking system for a number of seasons but have ended up many times with the shock cord wedged between the rudder and the frame. Very annoying !!
Regards,
Peter