Our worst clinical instructor didn't allow us to do much - said she wasn't going to risk her license! She demanded to be present when we practiced certain skills, yet she hid out and was unavailable. She seemed hesitant, which was not good for the students confidence levels.
Our best instructor came off like a real hard a$$ during orientation - let us know the bar for her students was "up here" and she would take no less. Told us she didn't like shy people and could make grown men cry. She said, "trust me and just roll with it. I know what I'm doing." She totally inspired confidence in us all, and this forced us to step up. It became apparant to me early on that this bad guy routine was to help us do just that.
She was also very active talking and joking with all the nurses. By doing this, she could more easily place us with them, as well as get feedback on our performance.