1. Sinikezela ngamavili okugaya i-alloy kunye namavili e-grooving anobungakanani obuhlukeneyo bokugaya kunye ne-grooving ye-rubber rollers. Nceda uqhagamshelane nathi ngelona vili lilungileyo kwisicelo sakho.
2. Khetha ubungakanani bamasuntswana afanelekileyo ngokwemeko yeeCots ezinobunzima obuhlukeneyo, obufanelekele ukugaya umgangatho ophezulu kunye ne-grooving of cots.