SLI ni imfashanyo ikora gusa iraburira umukoresha wa crane ko yegera ibintu birenze urugero bishobora kwangiza ibikoresho nabakozi.Igikoresho ntabwo, kandi ntigishobora, gusimburwa nubushishozi bwiza bwabakozi, uburambe no gukoresha inzira zemewe zo gukora crane.