I lived at Cullendulla for a few years between finishing with the Army and joing the RAAF.
Do you have a boat? If you come from Nelligen towards B'Bay there is a small isle. On the shore side of that isle is a hole. A deep hole. I found it one day with the sounder. It is not very big, if you blink you will miss it. Drop a squid bait there...Trust me, you might want some heavy line and a good drag system
itsaboat mate...Life is just a boat and then ya marry one !