Not too many options here. "Tag" or "No Tag" (safe/out) is strictly umpire judgment. He either sees the tag and calls it or he doesn't. Plus, since it's a judgment call, it cannot be protested.
You can just hope that the umpire is in the right position, at a good angle and distance to clearly see it and call it.
So, you're kind of stuck with this call. A coach's best option is to request "time", wait until it is granted, then speak with the umpire that made the call. ([highlight]And that is an important point![/highlight] Any change of the call must be made by the umpire who made the original call. Many coaches just automatically go to the plate umpire. Neither umpire can "reverse" the other's call. You need to direct your attention to the umpire that made the original call.)
Keep it simple- and polite! Say something like, "It looked like maybe the tag was made before the runner reached the base. Could you please check with your partner to see if he had a different view?".
Any good umpire that knows his view was blocked or impeded will likely go to his partner without hesitation. The other umpire(s) can huddle and share information. Then, it is up to the original umpire to either uphold or reverse his call.
Keep in mind that it is not REQUIRED for the umpire to consult with his partner on the ruling. He may refuse to if he is certain of what he saw and what he called. But, if you ask this way, you have the greatest possible chance of maybe getting the call corrected.
This method of a coach questioning a call is a perfectly legal and acceptable way to handle this. No umpire should ever be offended or act mad because a coach approaches him- or, questions his call- in this manner. In fact, it is the preferred manner that umpire's would like to see coaches handle it!
You might still get stuck with the bad call, but you just might get things fixed your way. You just have to remember, if the umpire refuses to get help, or fails to reverse the call after he does, you are basically "out of options"... ?
