Low single rail full pirouette drills can be trained to a mixed-grip first, and then to a complete eagle grip.  Some of the goals are to keep the body fully stretched during the turn without any arch or pike, and when coming down, to land straight on the soft mat instead of crooked to either the left or right side of a perfect perpendicular line in relation to the rail.  The gymnasts can also learn how to keep visual contact with the rail to for catching it, and aim to grab the bar close to shoulder-width.