Here’s a rule of thumb for writrs: Whatever the writer for Yahoo! Sports‘ “Prep Rally” does, do the opposite:
Don’t use an unnecessary word like general to modify rule of thumb; it is by definition a general principle. And don’t use multiple pronouns to refer to the same person. I was so confused by that sentence that I thought the opposing coach charged and attacked (which seem to be the same thing) youths.
Terribly Write 
July 13, 2013 at 11:02 am
The only thing for that sentence is to throw it out and start all over from the beginning again.
Using “one” for “me or you or anybody else” is usually reserved for formal or upper-class British English. But then, the British have a long history in India.
July 13, 2013 at 1:35 pm
One hardly hears the word “one” when referring to a person these days.
July 13, 2013 at 9:41 pm
If I were the editor, I’d have changed it to: If you’re coaching a youth sport, don’t become so enraged at the opposing coach that he or she attacks you so violently…