I catch myself participating in spotting, even when I'm not the lead spotter, because I have a different view. I try to remove myself from the equation when I realize I'm doing a no-no.
I prefer the spotter to use 80% hand signals, 10% head shaking, 5% yelling in english, and 5% 10th grade spanish (i.e., bueno; no bueno) - See Blue Wes for details //LMAO//