Ko ngā RMU mata waho he waahanga nui o ngā huinga hiko hou; he mea matua hei whakahaere i te haangai hiko. Ka āhua mōhio ki te whakapai ake i ngā tikanga whatunga mā te tuku haumātaatua me te whakauru kikii ki te hanganga e noho ana. Ko ō maatau RMU mata waho ka whakamahi i ngā hangarau hou e tiaki ai i ngā mahi i raro i ngā tikanga āhuarangi tino herenga. Kua hoahoa kia whakawhanake i ngā tono hāngai ki ia tauwāhi, ā, kia ū ki te kounga, kia hou hoki kia whakatutuki i ngā herekore hāngai. Nō reira, ka tuhia e tātou te tuku hiko ū, ā, ka whai mātātoko ki ētahi atu tauwāhi hou.