from the marina. there is a carpark right by it and just head for the jetty/pier. its got seats and somewhere to rest your rod.
if you go to the end by the lighthouse you can drop a line on the river side or into the rough.
there is a also a good mark on the beach by the white house. look at the lighthouse and scan to the right, you will see a big white house on a hill, theres a beach mark by there.
if you go when i did and its dark just walk towards the lighthouse and youll find the pier, its all lit up mate.