Just got back from a few days in Wainui and went and dived at Cape Three points which is just down the road from Wainui.
To those not interested in precipitous approaches to a dive spot then this is not for you as it can be strenuous to say the least. If you've ever dived at Karaka point this will be a familiar approach except it is much more slippery after a wee spot of rain.
From the township of Wainui you can see three islands of rock close to shore to the Southeast.
Drive till you start going uphill steeply and park at the next opportunity which coincidentally is where the track down is.
I think alot of OW course are done from here as the track is well worn and there is a rope (badly needing replacement).
Anyway it's a nice dive in what is now a marine reserve, there was a fair amount of schooling fish (what ones I haven't a clue), large crabs, the biggest starfish I have ever seen and something that looked like an enormous purple blancmange.
Max depth was 15m and the vis was pretty good I imagine for the area at about 4-5m.
Gonna have to get a camera soon..