Snapper and kingfish would be possible from the wharf… but it is at the wrong end of the season. I personally would walk to the point which is poking out into French pass itself… Plant a large burly and hopefully drag in a few KY, mullet, Snapper and Kingfish.
Casting into the pass itself can be productive. There is a track which goes down to a small lookout and below the lookout there is a hidden track which goes to a small beach and concentrate structure. It is right near to the fast moving bit of the pass, heaps of current. If you are going to try for a kingfish in the pass bring heavy gear.
French pass would be very busy over the easter break… It is a much nicer looking spot then the keneperu.