The seventh installment of the football speed training mini-camp from http://p01football.com addresses the turn and go drill for any defensive back. The twist on this drill is the back spies the quarterback and takes a 45 degree speed turn in the opposite direction to get the interception.
This drill is especially useful for making defensive backs on the field in game time situations. We want to focus on enhancing athletes performance by incorporating position specific drills. We always focus on activity that makes athletes better in gametime situations. If you do not train for game time movements and situations then you are wasting precious time on the practice field.