This is just from a spearo's perspective, so your mileage may vary. I think there is a good chance for catching moki from the beach after southerlies, Just be aware of the reserve and the first bay before the massive slip has a freshwater spring right in the middle, so there isn't a lot of life. Before and past the gate is a honking current and lots of boulders, probably not worth it casting over. Long stretches of beach is where it's at, most fishos I see there travel a fair bit with an atv or 4wd