I think I asked about this one years ago. My memory is that some of the South Island sailors may have had a look, but it is a long way for most of them to get to so none had sailed it AFAIK.
Nevertheless, I wonder if anyone had checked it out lately, It would seem to be an ideal set up for a WSW to W wind, which should be very common and very strong at times in that part of the world.

It reminds me of the Henty setup in Tassie.
Tewaenae Bay:

Photos from Google Earth: