I don't routinely take vitals...I do, however, manually check "off" BPs. When I have taken full sets of vitals, though, I counted respirations.
There used to be a tech at work that always fudged the RR until the day I observed him use the Dynamap, then record the vitals including RR. Knowing full well that he never once looked at the clock on the wall or his watch I asked him how he timed the respirations. After some cock-and-bull explanation, I told him I depended on him being accurate and that if he couldn't be then I'd take my own vitals, thank you very much. After that he made a point of counting respirations because he knew I'd check after him.
I didn't answer your poll, though....none of the answers fit