Offshore shoals break up a lot of the swell energy, that's one factor. Secondly, if you look at the island on a map, it is tucked-in pretty tight compared to its counterparts to the north and south i.e. the north end of the island bends in landward (whereas in AC/OC, it bends out seaward). Also, the south jetty is about a half mile landward from the North end of AC. These factors limit definitely put some limitations on the size and type of surf the island gets. Not to say that the place doesn't have its moments.....but the bottom line is that you might want to look elsewhere if your looking for somewhere to hold big groundswell.
Surfed the north end and south end for years. Both are polar opposites. Your goona have to figure it out on your own. It all goes back to the buoy data as well as local winds. Observe, experience, and draw conclusions.