Informative photos. We visited along that coast in March this year. Didn't actually call in to that spot, unfortunately. A few of the places just north and south of there though. I think there are still some slight remnants of boat activity at Second Valley on the Fleurieu Peninsula too.
Second Valley has none anymore. It has all been cleared away. I do remember the tin boat sheds (about 1954 ) and the railway lines down to the water .The sheds had windlass's in them to wind in the boat trollies