Mate I have an onsite van at Cudmirrah for nearly 20 years and have fished alot in the basin for always getting a feed of lizards . I was down there over the long weekend and fished all around it for not one take.
Water temp was down to 13 degrees a pretty dramatic drop and this will push them deeper. Plenty of bream around as is always the case down there. I sometimes prefer to fish the beach at Cudmirrah just north of where Swan Lake comes out there are several gutters that are good fun on some decent size salmon at times to 80cms.
It is a great family location as you have got the beaches , inlet , the quays and the basin plenty to choose from.
My PB flathead out of the basin is 82cms so far but there are much bigger around and you can sometime even see them lazing in the shallows but will not take a lureor bait.
Anyway that is fishing !
Cheers
The Skipper