Hi indofish
mate there are about 3 boat hire places on the Hawksbury river and yes bobbin heads is a good fishing spot just plan your trip as it is the mouth of the Hawksbury Flintin steel, Lion island if the weather is up plenty of spots from Cowan along the edges to Patonga Creek or the southern side of the hawsbury just look for the Oyster leases
and if you are in good spirits and the weather is fine try around mackeral beach in Pittwater or run up to Ettalong towards Gosford plenty of good fishing spots there as well
Bobbin heads this time of year Tuna, Mackeral, Snapper, Jewies,
up the Hawksbury Flathead, big Bream in the Oyster lease and near the bridges, Jewies
just look around and ask for local knowledge the boat sheds will give you all the info you need
Cheers
Steve