Mine would be simple. Darren Goldspink.
God how I hated him as an umpire.
But...
Imagine hiring a just retired umpire as part of our coaching panel.
"Don't do it that way, you'll get pinged..." "Try it this way instead..." Every session.
How much would it help us to (say) lose 25% of frees against, and maybe add 20% of free's for?
Just a thought,
FatDog.