the first looks like an old photo of shearwater area before wavebreak was established, the second looks like an old photo of seaworld opposite the train (looking south from above). No volcano and only smallish sandbars - ooooh, must have been the good old days
The water is generally over a couple of metres deep, but there are some more shallow spots here and there
Thanks for the offer oh great one. When I make it up there again Ill pop in for a chinwag and bring a few sherbets. Thanks for the info Haircut, filed away.