Harmbu - thanks for the comments. I'm sure that after working a few games with you out there, you would have earned my respect, and questions asked cordially would probably be answered.
This may be a my-neck-of-the-woods problem, but judging from posts by some of my more experienced colleagues here, I suspect it's not just here. MOST (and by that, I mean more than 80%) of the assistant coaches here are ASSistant coaches. Many (maybe half) are just there because their kid is playing and don't have the first clue about game etiquette, rules, or even coaching. They are more short-tempered than the manager, and have less reason to question rules than manager - a volatile combination. With this the situation the vast majority of the time, you can see why many of us have simply shut off communications with them
By the way, your moniker, "Harm BU" probably leaves several of us wondering what you have against BU (especially since you have rendered him irrelevant!)
I would ask you to reconsider whether a game could be run without a BU. I've worked games solo - and I'm POSITIVE that I've missed a runner missing a base or an obstruction here or there in each of those games. And I've probably missed an occasional out/safe call because I could not get all the way into the optimal position. Trust me - your game is in MUCH better shape, regardless of level (possibly excepting 8U or teeball) having 2 umpires (or more) out there.