Whakamutua te rerenga e whai ake nei ki te kōwhiringa pai rawa: Me pēhea te whakarite kia pai te rere o te wai o tētahi hua rākau?  Ngā kōwhiringa: - Me whakarite he poka kei raro o te ipu. Whakanohoia ngā kōhatu iti me ngā kōhatu ki raro o te ipu i mua i te oneone. - Kia mōhio kāore he poka i te raro o te ipu. Whakanohoia ngā kōhatu iti me ngā kōhatu ki raro o te ipu i mua i te oneone.  Whakautu:
Me whakarite he poka kei raro o te ipu. Whakanohoia ngā kōhatu iti me ngā kōhatu ki raro o te ipu i mua i te oneone.