Nō mātau ngā whakawheria huapū porowhita mō ngā motokā e tukuna ana i te whakamahere rerekē, kāore i ngā raranga wai hiruhiru. Ko te āhua itiiti ka whakaae ki ngā waka whakataki motokā, e mahi ana i te waiporowhita matatika hei noho i ngā karu, ngā pūnaha, me ngā pūtake motokā, ngā roanga, me ngā rīhi. Ngā whakarite huapū (100-150 PSI) ka taea te whakarite ki ngā tahutahu rerekē, ā, ko te paoro wai ka whiwhi ka mahi kē i te kore kauhere. Tae atu ki ngā puhipuhi me ngā taritari āhuarangi, e angitia ana ngā motokā i te pai me te itinga o te wai.