depends on your style of fishing
A. plastics and sluggos, when waters warm up hit some wharves that hit deeper water zones and work areas consistently, match your plastic size and colour to the avail baitfish and you should have success (my fav last season was a slimey colour), i would really concentrate on areas east of the harbour bridge.
B. live baiting is ideally the other method, anywhere that is a head and has a constant flow of current should be right with usual livebaiting rigs and freshest baits and have a decent selection out too (squid strip, yakka, pillie etc) to get the food chain going.
Or live bait at the wharves but with no sinker.
C.live squid, fished unweighted at the end of clifton gardens wharf
landing the king once you hook up is another story.
but the story at the end of the day is, sometimes their just not on and you may need to wait till the water warms up before their thick and fish a spot consistently if you know it holds fish.
Cheers Jimmy