4/0 Owner SSW circle hook, snell the hook onto a 80lb nylon trace. I use a simple long cast pully rig again out of 80lb line. If you can not get crabs, then prawn work well and can be purchased from most supermarkets. I tie them on with heaps of bait elastic.
Best fishing is at the change of light with a incoming / high tide. A new moon and overcast conditions might also help. December onwards is when they are most common but a few are around from late september.