Okay here's my pet peeve!
Why in thw world would you tell them where the OOB line is? I mean, I know that there are v-ball lines and additional court lines on some floors but I've never seen a court where it wasn't obvious which lines were the main boundary lines.
BTW, I agree that the less we say the better. I know a couple of young officials. They always say, "I'm Mr. Smith, this is Mr. Jones and we're in charge." Geeeze!