Ka whakamahia e te pūnaha tirotiro utanga me te waka BGV5000 te hangarau whakaahua matawai tirohanga irahiko, ka taea te mahi matawai irahiko ipurangi wā-tūturu i runga i ngā taraka me ngā waka hei hanga i tētahi whakaahua tirotiro tirohanga o te waka. Mā te whakawhiti me te tātari i ngā whakaahua tirotiro, ka taea te whakatutuki i te tirotiro haumaru o ngā taraka. Ko te nuinga o te pūnaha he pūnaha whakatere me te taputapu reriwe whenua. Ina whakahaerehia te pūnaha, ka tū te waka tirotiro, ka rere te pūnaha tirotiro i runga i te ara i te tere pumau hei matawai i te waka tirotiro, ā, ka whakahokia e te waeine hopu tohu me te tuku te whakaahua matawai o te pūoko ki te papa tirotiro whakaahua i te wā-tūturu. Ka taea te whakamahi whānui i te pūnaha i roto i ngā tirotiro aukati-whakaeke taonga a te tari taake, ngā tirotiro tomo me te puta i te whare herehere, ngā tirotiro rohe, ngā papa whakahaere, me ētahi atu momo taraka me ngā taraka pouaka mō ngā tirotiro kawe taonga huna. Ka taea hoki te whakamahi mō ngā tirotiro haumarutanga o ngā waka utanga i ngā huihuinga nui, ngā wāhi nui, me ngā huihuinga nui.