What rocks would those be????
Could be worthwhile to fly fish off a small sand bar at hobbs bay (evening or dawn). Or maybe Goat point.
From memory the area where golly got onto all of his Snapper is quite bluffy at high tide with shallow rocky, kelpy beaches at low
In saying that, I have never been out there with the intention to go fly fishing so potential spots might be quite common. Anything inside of Moukirikiri Island is within easy paddling distance for a day trip. If you really determined the further islands and the heads would be a option but I never had made the effort.
The Gurnards are currently about, have heard no reports of Snapper.