Yeah the betka or the wallagarah river are good spots for bream. We use to go to mallacoota every year, but sadly dont anymore. We got a bait pump and found some pink nippers for bait, as well as small mullet (all live).
The first year we went me and 2 mates ended up with 50 odd leather jackets from the pier. The jetty is a good spot for night time fishing to, a fair variety there.
What ever you do dont ride around there on a push bike without a helmet...the locals are bored enough to call the police to report such instances. lol. Dont ask how i know.