Kia pēhea te roa e tāpirihia ai te wai e te pūwhakamātao waka?
Ko te tikanga, ka tāpirihia te 40000 kiromita kotahi, kāore te wai o te tāke waka e tāpirihia ana i runga i te wā, engari i runga i te taiao e karapoti ana me te whakamahinga o te waka, tirohia te taumata wai i ia wā, kāore hoki he take ki te tāpiri wai:
1, ki te tāpirihia he wai, ka oma i ngā tekau mano kiromita i muri i te hiahia ki te horoi i te tāke wai, mā te ara ka taea te whakakapi i te wai whakamatao;
2, ki te tāpirihia he wai whakamatao, me whakakapi te wai whakamatao i ia rua tau;
3, he maha ngā ārai huka roa kounga teitei ināianei, ā, ko te tikanga he aro nui ki tēnei, ka taea te horoi i te tāke i ngā mano tini o te tawhiti.