I'm not a Doctor or don't claim to be an expert but it seems to me if you take away speed from one object the chance of a higher impact on collision will be reduced. So if you allow the db to stay in contact with the receiver after 5 yards, allow for hitting to slow them up....than maybe this will reduce the injury to people. I know you may see some injuries but the slower the receiver the lesser the impact. Maybe the old style of man to man should come back. Daryl Stinger did get hurt bad but it just seems the head injuries are more prevalent today. You can still call the hit to the head penalty but if the db aims for the chest and the wr helmet comes down and makes contact it should not be a penalty. Just saying.