How many would be umpires

[Whowefoolin]

I would put:

80% on Game Management (you need this to get through the game and to have some common sense in certain situations)

15% on Field Mechanics (even if you don't know what is going on, if you LOOK like you do, half the battle is won)

5% on Rules (if you don't know them, after the rash of sh#t you get from the fans, you will know them next game)