ktc
...ya gotta change it in high school by tossing the thugs off the team. Then make thuggery a disqualifier for a scholarship. Then make the teams pay em and keep em on the roster but not play em. That way they won't draft assholes.
...as to your suggestion of a way to slow the players down to prevent injuries. I got a great idea.
...I've seen fat cops carrying 40 pounds of gear catch folks dressed like this.