We went on a charter in one of the estuary systems there-have to say it was pretty mediocre, nothing majorly exciting caught, a couple of reasonable jacks and grunters, a small queenie, too many crabs and other bits and pieces. People reckon that there are no crocs near the river mouths and there were people swimming just near the marina when we were up there, the next day we saw a 4m saltwater croc about 100m from the marina at the entrance to a river mouth. Maybe thats what bit you off Mike .
Josh