Ko te kuaha waipuke aunoa hydrodynamic he kowiri tira, konumohe me te rapa, ko te tukanga pupuri wai he kaupapa tino parakore, kaore he taraiwa hiko, kaore he kaimahi i runga i te mahi, he tino haumaru me te pono. Ka whakatauritea ki te hiko hiko, ki etahi atu ranei, karekau he morearea o te ruku hiko, kare ranei e mahi me te kore hiko hiko.
