Football coaches
Football coaches are shorthand for two different, but both very bad, types of people who affect high school quizbowl negatively:
1) A high school quizbowl coach who insists on developing "strategies," substituting players frequently, yelling at his team, and coming up with practice approaches that involve anything besides learning clues that are likely to come up, is generally acting like a football coach instead of a quizbowl coach
2) Football coaches are the people who run state athletic associations. They are responsible for single-elimination tournaments, "language arts" questions, three-weekend, 11-match state series, restrictions on out-of-state participation, and generally everything that is bad about "officially sanctioned" high school quizbowl. Whenever someone gets frustrated about the problems with IHSA, MSHSAA, or VHSL quizbowl, they should be reminded that those organizations are run by football coaches, not quizbowl coaches or players, and thus will never understand or care about how to run a good quizbowl tournament (and in many cases will be actively opposed to doing so).