We found them at hutchies in 45mtrs, that's the most shallow I have found them. Otherwise I think 80 mtrs is the starting point for them east of moreton. As you have already suggested, it's hard work if you are not parked directly over a school. Your sounder is your best friend, once you recognize a school of YT you won't be dropping your jigs down unless you are certain. Get gym membership a few months prior if you are going to prospect here and there every time you see one or two fish, I don't bother unless I can see thick schools under me.
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