Huka Falls Jet. For high-speed thrills on the Waikato River take a trip on the Huka Falls Jet, which spins and skips its way between the Aratiatia Dam and Huka Falls. Departures are every 30 minutes from Karetoto Road throughout the day; cost is from around NZ$109 and NZ$65 for adult and child under 15 and at least 1 meter tall. 200 Karetoto Rd., Taupo, Waikato. 647/374–8572. www.hukafallsjet.com.