Okay after seeing that rule, I'm more ok with it. I was under the impression that this only was for running backs. Still not a big fan of the rule though, we will see how it plays out but I still for see a lot of running backs getting cracked in the open field
This new football rule suggestion... - Page 3
Poll Results: Should the NFL pass the rule outlawing running backs from leading with the crown of their helmet?
TheSandTrap.com Top Picks
I've been coaching for about 5-7 of the last 10-12 years since I finished playing college. I always emphasize keeping the facemask up. As you allude to, if the body is leaning in toward the target with the shoulders down, the head necessarily has to be in front of the body and is technically also "down". If you look down at the ground then the facemask is parallel to the ground. If you're looking at the target, the facemask will be at more of an angle, but that should do enough to prevent spearing or launching crown-first into the target. The lower the hips/butt are, the easier it is to maintain a proper angle of attack at impact.
It's the proper way to tackle if you have the right equipment and neither player has reached full speed, otherwise it's a great way to break your neck too.
Obviously I'm over-simplifying a bit for the sake of time. The head is ideally always off to the side of the target. Let's be real...it doesn't really matter what position it's in if it is caught at full speed behind the weight of your torso and somebody else's with direct contact.