Not really too sure about those areas as ive only ever fished the hawkesbury on the north side, and that was by boat, and a couple of times near brooklyn, but they were nothing to brag about. Only tips i can give, that ive discovered over the last few months having taken up fishing again is...
If using bait, make sure its fresh. Burley helps.
Smaller hooks are better than larger hooks, and make sure they're sharp and that you dont have too much bait on the hook.
Light line is a must, the chances of catching 10kg shore based are very small, so there is no need to go for heavy line.
Start to think about tides, if your not writing it down, take mental note of what time of day the fish are biting at a certain spot, and what the tide is like, moon, wind speed and direction, etc.
If you're going to areas where there are other fishermen, take note of what they're doing. If you're fishing at night, dont leave your torch on all the time.
Thats all i got at the moment, that and don't give up. I went through about half a year of catching next to nothing until i started to fish with my head. Everytime i go out fishing with mates, i end up catching more than them. They think its all about luck, which to an extent is true, the fish has to be there when you are. But if you do the other things right, you increase your chances of a catch by heaps.