This is why you have a football-only practice facility that has coaches' offices overlooking it. All the big boy programs practice WAAAYYYY more than what they are allowed to and here is how...
Players can now "voluntarily" practice on their own time while the coaches watch from the confines of their elevated, glass offices. Of course, the coaches can't have contact with players during these "voluntary" workouts, but rest assured there is someone that relays info to them. This has been the first year we are able to fully exploit this loophole like other schools do. This is a reason Dan wanted the football-only facility before the stadium upgrade.