Try the beacons leading north fom tangalooma, chasing cobia or the occasionall yt king or jew that have been showing up of late id be fishing 50lb main and at least 60lb leaders,
Try driving up current and drifting past either side of the pole using 10ball sinker above a good 80cm leader, generally a 9 or 10/0 live bait pattern hook will be needed fishing that line class, also drop a few live baits into that back eddy you get on the poles alot of fish hang htere waiting for a bait to come past, if you do hook a solid fish such as a Cobia or YT king they will head straight back for the structure so be prepared and hang on,
Hope this little bit helps
Good luck
Josh