How about an opinion:

[kylejt]

I know some coaches that have been around the block, and can offer some pretty good information on umpires. I'll hunt them out, and seek information on my crews. Some coaches are actually umpires themselves, and have a different take on things, good or bad.

My point is that you shouldn't just summarily dismiss their input. 90% may be worthless, maybe more. But you might learn something from the other 10%.

As for umpires evaluating coaches, I do it all the time. I'll rate them on rules knowledge, game management, situational awareness, etc. I'm usually on the panel that evaluates them as All Star manager candidates, and my input is pretty highly regarded.

If you're in the "all coaches are rats" club, disregard all of the above.