DolfanISS
Perennial All-Pro
If I was as bad at my job as some of these guys, I'd have been kicked to a different line of work a long time ago. Really, at my current position, we'd have shuttered our doors if I were as incompetent as some of these guys.
I'm not a football coach by profession but i'm 100% confident I could coach the Giants (for instance) to at least two wins, so I'm gonna go ahead and say Pat Shurmur (again, just a convenient example) is an incompetent head coach.
Same with Mike Vrabel ;=)!