For summer, best bait is crab followed by squid. Squid can often outfish crab for the skate. Wouldn't bother with rag though really unless after flatties / schoolies.
3 hrs either side of high is when I fish there. Plenty of colour, medium to large tide and a flat sea is essential.
Usually use a 2/0 pulley pennel cast as far as I can with half a crab.
Get the conditions right and its a great skate venue with chance of hounds (had my PB hound there at 12lb). Usually a good gulley at the Hilston end which can throw up a few schoolies if there's a bit of surf.