What time are you thinking about going Hamish? Low tide is middle of the day this weekend so options for quiet spots with water will be limited, as will your ability to net livies. There will be water in the channel that runs from the boat ramp towards Manly and not much boat traffic, especially in this wind. Just follow the markers and fish the drop offs on the last hour of the outgoing tide and first hour of the incoming tide and you might pick up a flattie or two. If you decide to head to the river, watch the current in the boat passage. It gets pretty strong on the dropping tide. Watch out for ships, tugs and idiots. Good luck!