Sun up and Sun set are the best time's, haven't been there my self for about a year or more, I was using a small red wall plug and burley, we also used squid tentacles as well, try a bottom rig setup, long leader with a running sinker.

http://en.wikipedia.org/wiki/King_George_whiting

http://gallery.rockinghamgateway.com/thumbnails.php?album=31&page=3

Tern island changes every year so it hard to say what end to try.

As you can see by the images tern island changes

TT ( karl )

Some good KG advice was posted by Ryan Thripthorp under "window fishing" search that for starters. Although that's more based to offshore - principles may hold true.

Look for weed banks, I have found squid good bait on paternoster rig, minimal weight, light lines, cast to edges of weed (not too close = wrasse, not too far = blowies and no KG's).

Good luck, or if feeling m,iore adverturous treck to pengo Island and try north-western side in rock,weed, sand holes. Some monsters lurk in there mate. Take goggles and snorkel round - u will seee em'.

that is the rig i like to use then i go to my local iga and bye 2 livers and cut them into littel cubes and put them on ma hook make sure u berly the warter up good to 

i have found this fish likes red meat to most