On the field demonstrations of Porterville’s sled & bag blocking progressions.Coach Stewart’s teams have always had powerful ground attacks as he has turned around 3 losing programs. This years team rushed for close to 4,500 yards and had two 1,000 yard rushers. This DVD shows Tim Murphy working with Stewart’s linemen on the field. This is all on the field drills. Warmup Sled Progression Bag Progression This is the first DVD that Stewart made and has now been replaced with the 2-hour Pistol Wing T Offensive Line Drills. All the drills on this video are on that new, updated video.60 minutes. 2009.