Zaɓin stack shine jangali mai dogon lokaci wanda kake yi da bayani mara cikawa, saboda haka mataki daidai shine yanke shawara ta ɓatanci, ba ta ɗan gida ba. Firayim mafi kyau a zaɓuwar ganawa ba shi ne yake aiki da aiki bayan shekaru biyu. Jiyya na tare shine ga gargajiya, tiyata aka tabbatar da ita sai dai akwai dalili na ainihi don kayyade.
