Maybe Cull is the wrong word , lets look at prevention. The Gold Coast a has pretty sparse system of nets and drum lines and no attacks in over 50 years. You only need to head South 20 mins and the attacks start happening in Northern NSW where there is no nets or drum lines. These recent attacks were only about 80 to 100km's as the crow flies from the Gold Coast. All the great whites migrate start past the Gold Coast and no attacks , the nets and drums only pick up a few but it does seem to keep them away. So maybe the sharks have learnt not to come close or they can sense the wire on the drums or the nets , as a fisherman I know you hook up less on wire than mono.
The coastline of Qld and NSW is vastly different with a lot more headlands and close reefs in NSW so maybe that might have something to do with it. It wouldn't cost much to do a trail a try the nets or drum lines instead of spending 100's of 1000's of dollars like they did in WA for no result.
Before anyone gets on here and starts save the shark no nets we are in their domain , you do realise that 10's of 1000's of sharks are killed every
DAY for their fins , so if you want to save some sharks go to the Sea Shepard link below where 100 million sharks are killed every year and donate some money to help try and stop it.
The nets might only pick up 50 to a 100 sharks a year but if that saves just one life it’s well worth IMHO…..Flame suit on
seashepherd.org/2015/01/09/sharks-dont-kill-people-people-who-kill-sharks-kill-people/?gclid=Cj0KEQiA9eamBRDqvIz_qPbVteABEiQAnIBTECkiRbmaVHnhOR1vDQA2j5jC61FmKA53ziJ9F_uPUy8aAt218P8HAQ