A midnight curfew for incoming freshmen to start.....let recruits know this up front. It's hard to argue that Mixon would not have benefitted from such a policy.
Talk to family, friends coaches and teachers at the kid's hometown.
Attract players that are selfless, tough, team-oriented and enthusiastic....players that a coach wants to coach with solid practice habits.
If a "bad apple" slips through the cracks, react fairly but decisively.
And don't bring in a player from another school with questionable character, as in the case of Dorial Green-Beckum.
I respect your opinion but that's not a formula for winning championships.