Another option is to drive from Waihi down Golden Valley Rd, then left into Ngatitangata Rd until you reach a parking area next to the access track sign. Then the walk is quite steeply downhill for about 45 minutes, though farmland then bush, to the beach. This is a beautiful, relatively remote place. Do it if you have the time.
You can also explore the track south towards Orokawa Bay from here as well.