HBF,
The reason why I asked what spotting a trailer was is because I got called by Roadway Express to come in for a road test today. All I had to do was a pre-trip, back a trailer into a parking space, and go around a course. I think I did fairly well considering that I didn't make the guy riding with me cuss, cover his eyes, scream, or pray.
So, this thread can be officially closed. Many thanks to all those who replied as well.