Kusiyana kwakukulu pakati pa gudumu lalikulu ndi laling'ono ndilakuti, wogwiritsa ntchito gudumu lalikulu (m'mimba mwake ndi woposa 20'') amatha kupita patsogolo pokankhira dzanja la gudumulo yekha, koma gudumu laling'ono (m'mimba mwake ndi pansi pa 18'') likhoza kukankhidwa ndi ena pokhapokha ngati wogwiritsa ntchito akufuna kuyendayenda. Chifukwa chake mawu akuti, gudumu lamanja limagwira ntchito bwino ndi magudumu akuluakulu samveka, gudumu lokhalo lomwe likugwirizana ndi mkhalidwe wa wogwiritsa ntchito ndilo labwino kwambiri.
Mungasankhe kukula kwake pogwiritsa ntchito mphamvu zanu, ngati mphamvu ya mkono wanu imakulolani kukankhira mpando wa olumala, ndiye kuti mungasankhe gudumu lalikulu. Ngati sichoncho, kusankha gudumu laling'ono loti mulikankhire ndi wosamalira kuyenera kukhala lingaliro labwino, ndipo ndi lopepuka komanso losavuta kusunga.
Mukhozanso kusankha kukula kwa gudumu malinga ndi malo omwe mukukhala. Ngati mukukhala pamwamba pa chipinda chachitatu ndipo mulibe elevator, gudumu laling'ono lingakhale loyenera. Ngati simukuyenera kukweza chikuku cha olumala, gudumu lalikulu lomwe limafuna khama lochepa kuti likankhire, komanso luso labwino lothana ndi zopinga ndilabwino kuposa gudumu laling'ono.
Kodi njinga ya olumala imagwira ntchito bwino ndi mawilo akuluakulu? Yankho lake ndi lomveka bwino pakadali pano. Njinga ya olumala yokhala ndi kukula kwa mawilo komwe kumakuyenererani imagwira ntchito bwino.