We seem to be blessed with a wide range of coastal marine environments here and lakes and estuaries are no exception. Brisbane Water, Tuggerah Lakes and Lake Macquarie all provide great fishing opportunities for a wide range of species from flathead to bream to tailor and other pelagics. A boat is a useful tool here as they are all quite large but there are still land-based opportunities.
The Bribane Water area can be accessed via numerous boat ramps and fishing from land is popular around Woy Woy and Ettalong. Rods of 5 to 7 weight are all you need, and both floating and sinking lines are useful depending on the tidal flow. Clousers and crazy charlies have proven themselves here in plain white and chartreuse and white, but other colours are also worth a go. Fish rocky structures and weed beds with a good pause between strips.
Tuggerah Lakes can be fished from land at The Entrance and other nooks and crannies around it's margins. A boat will give you better access to more areas. There are a lot of flats harbouring species like flathead, bream and whiting and teasing a fly over the gaps in the weed banks can often provide an aggresive take.
Lake Macquarie is a large lake and provides a lot of angling opportunities. At Swansea you can fish the channel for flathead or if you're lucky hook a passing kingfish. There are opportunites around Pulbar Island and fishing around the moored yachts that are scattered around the lake can provide some exciting bream fishing. Another option is to fish the hot water outlets from the power stations for more exotic species.
Also try out some of the lagoons around the Coast. They are home to bream, whiting and flathead and are a great opprtunity to take the family for an afternoon out. Kayaks and float tubes can be very useful here. Try small clousers or crazy charlies that imitate the small prawns or baitfish that inhabit these waters.