MANTA RAY anchors are designed to drive into the ground, at any desired angle-from vertical to very shallow angles. The patented internal drive radius feature helps the anchor remain on a straight path during driving, because the contact surface between the anchor and the drive steel is ahead of the maximum crosssectional area of the anchor. Thus the anchor is in effect “pulled, not pushed into the ground”. The close fit of the anchor to the drive steel also helps the directional stability of the anchor. The out turned lip or “Duckbill” on the trailing edge of the anchor helps to balance the profile of the anchor, which also improves directional stability of the anchor.