When we lived in Hervey Bay(thank God we don't now)we often used to go over to Kingfisher Bay Resort and stay in our unit there and daily fished from the Jetty. We always caught plenty of fish and(when the time was right)also caught lots of squid and they were huge too. They love the prawn squid jigs and often you can see schools of squid under or beside the Jetty. Its easier to catch them when you can see them.
Happy Sqidding
Cheers
Rose