Hi curveball, love Narooma have spent a bit of time down there, if your boating the island has a shelf on the land side to drift to to the south there are rises good for Snapper, king fish, dollies and reefies
Get your livies and squid at the reef in front of the golf course first light
In the lake the get Jew, flatties, tailor, there is another lake to the south can't remember the name but full of mullet and flatties
In the boat If you head north to Tuross there are good and sand flats for flatties
For land base head down to 1080 beach off the rocks good salmon flatties and tailor
Hope this helps a bit
James