With all this fresh (rain) youll be struggling. That said no-one is complaining.
Options worth checking out.
1 The Cod Hole Maroochy River (west of road bridge.) Salt water more dense than fresh, likely to be pooling at bottom of the cod hole.
2 Mouth of Maroochy, with all the flow, there may be some bream lurking around the mouth looking for morsels.
3 The rock wall at the mouth of Mooloolah R might be worth a look.
4 Get a fishing DVD & stay inside where it's warm & dry.