hitting and tacking power in football is all about quickness and leverage... If you are faster and lower than the other guy at the point of impact, he's the 1 that will be hurting. Velocity X weight = Force of Impact... But what this formula forgets is leverage, if 1 player hits another with perfect form, head up, rear down, and sticks his face mask in the others chest, the guy lower will win 90% of the time. Unless the other player is just way bigger than the other, like twice the size... I used to coach a peewee team a year ago and I went into it with the mindset to just let these kids have fun and just teach em the basics, proper form and hitting stances, never made em run allot of sprints or anything, the kids just loved it, they loved coming to practice. I never had a problem with any parents wanting there kids to play more or less, it was just a really good time for everyone involved. We went 7-3 but like I said I wasn't concerned with winning and losing, but some of these other teams had coaches screaming at there kids, cussing at them at times, you could just see that those kids were not having any fun at all. I think thats really sad because thats when football is the purest and those kids will grow up with a negative impression of football and most likely not play Jr. or high school ball. Once the kids get into highchool you can start making a huge deal about winning, but other than that just let em have fun. The worst thing is when a parent trys to play through there kid, luckily I didn't have any of those on my team