Most canopies include stakes that drive through holes in the base of the legs to hold the canopy to the ground. Others may have tie-downs and additional stakes for added stability. You have to pull the fabric of the cover tight then press or hammer the stake into the ground to keep it secure. It helps to angle the stake toward the canopy so that the tension from the tie-down keeps the stake anchored. Other models include sandbags that attach to the legs and act as anchors.