Hei whakapai ake i te rakau hurihuri i roto i te pupuri o mua e whakamahia ana i roto i te tukanga hanga hua rapa toua, kei reira te rakau e hono ana ki te wae honohono ki te mekameka kawe me te tinana roera e whakauru ana i te kaihanga. Kei roto i te pupuri o mua he tinana roera he wāhanga poka waenga (15) hei whakauru i te kaihanga; he rakau whakawhiti-āhua-D kua whakatakotoria me te mau ki te tinana roera; me te tikanga raka hei pupuri me te raka i te kaihanga. Kei te tinana roera o te pupuri o mua he kaiārahi o mua kei waenganui i te wāhanga poka, ā, ka taea te hono atu ki te whakatuwheratanga o te waha o te kaihanga. He rakau me te wāhanga whakawhiti-āhua-D i tetahi pito kua mau ki te tikanga raka e whirihorahia ana i te koki matau ki te kaiārahi o mua; ko tetahi atu pito o te rakau e hono ana ki te wae honohono e hono ana ki te mekameka kawe. Ka taea te neke i te tikanga raka i te taha o te tuaka noa o te rakau e te tikanga whakapiko o te huinga pupuri, ā, ka whakahohehia e te mahi a te puna o te tikanga whakapiko hei mau me te raka i te kaihanga.

Ko te whakaritenga me te tikanga o te "huihui i ngā kaipupuri o mua" e whakaatu ana i tētahi whakaritenga me te tikanga o te huihuinga i ngā kaipupuri o mua hei whakakapi i te tikanga kotahi o te kaipupuri o mua hei whakanui ake i te rahinga me te hua o te hanga karapu. Ko te tikanga o te huihuinga i ngā kaipupuri o mua i roto i te hanga karapu o te whakaputanga kua whakaaturia ko tētahi pine e piri ana ki te pito o ia o ngā pou e toro atu ana mai i taua mekameka; e rua ngā hononga e piri ana ki te pine me ia o ia he hononga pupuri, ko te tikanga e rua ngā kaipupuri o mua e tohatoha ana i tētahi toronga pou, ko te takirua o ngā hononga i runga i te toronga pou kotahi ka noho tetahi ki runga ake i tetahi i te wā e hanga karapu ana, ā, ko te takirua o ngā kaipupuri o mua i te pito o ia o ngā pou toronga ka wehea me tētahi o ngā takirua o ngā kaipupuri o mua e 90 nekehanga te tawhiti atu i tōna tūranga taketake i ngā tukanga pēnei i te tā me te tango karapu. Heoi, ko te whai huatanga o te tango o te whakaritenga o runga ake nei o ngā kaipupuri o mua kāore anō kia eke ki te taumata e hiahiatia ana. Heoi anō, me te whakaritenga o runga ake nei, tera pea ka karohia ngā karapu i te wā e tango ana i te karapu, ka whakaitihia anō te whai huatanga o te tukanga hanga karapu.