Fam, let me chime in as a person that played football for over 30 years on every level... I've had white coaches on the college level who were, for example, runningback coaches who didn't have the ability to outrush a third teamer on a junior varsity team, but a good coach regarding x & o offensive schemes and black coaches on the other hand who were wide receiver coaches who could coach fundamentals but they couldn't understand the complexity of some of the offensive schemes. See on the pro level you don't need much fundamental coaching, but you do need somebody to understand offensive schemes which is like cramming in a master course in a couple months depending: Blitz pick ups, hot and option routes, personnel formation changes, defensive coverages and matchups, line blocking, audibles is more of what you need out of a position coach like runningback. On the other hand, having good vision and reading blocks and jump cutting versus spinning for example is not something you can necessarily coach as a running back has to have that ability already, especially at the pro level. Like for example, one of my pet peeves when I look at some professional running backs even they carry the ball in the inside arm instead of the outside arm when they're running outside and what happens they get more fumbles... But the good fundamental backs they know how to switch hands when they get to the outside. Another example, I've seen some professional and college backs not even be able to make a good pocket for the quarterback. You don't necessarily have to be a former pro or college or high school runningback to understand this, but the point is those fundamentals are not a black or white, man or woman, experience at being a runningback attribute you need to have to just be a good runningback coach and understand. Two my favorite sayings by coaches... The big eye in the sky don't lie (video/film) and you can't coach speed and effort.
