Elite Running Back Football Training: 4 Cone Drill . In this video, we go through a great agility and explosion drill for running backs utilizing 4 cones. Make sure you take your time approaching the cones to get through the drill then go as hard as you can to improve your agility. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-rRMo75HrbfI.html