Mate yakkas, i have known them as either yakkas or yellowtail, bung, scad.
The humble "yakka" can be burlyed up by using a mixture of catfood, bread, corn, tuna oil, old fish peices around structure like rock walls, jettys/peirs over shallow reef etc
The yakka can be used as a live bait for larger predators such as flathead, jewfish, kingfish, dolphinfish, tuna, marlin and various other species.
Yakkas can be caught once burlyed up to the boat using small hooks, minimal sinker on either hand lines or light rods.
They can also be caught using a 6 hook rig system where each hook has a tiny bead and peice of plastic to attract them.
Good baits to use on yakkas includes small peices of prawn, pilchard, whitebait, small peices of squid is top bait for catching them s it stays on the hook longer and yakkas have a tendancy to make light work of baits.
Good luck in the fishing, hope this information helps.
cheers james