If you take the Dunlawton bridge to A1A turn right go all the way to the inlet, there is a seawall that you can fish from. live crabs, shrimp, pinfish, fingerling mullet or pogies will work great. not much atificial works good there , there is big reds, shark, etc.
or try Rose bay on US 1 near state park , this is salt water marsh and great for flounder , use live greenbacks.
check the seasonal limits , have fun