pro tips... (country club)
learn the regulars names, learn what car they drive, and address them by Mr. "Last Name"
once you have yourself familiarized, you can have someones car waiting for them as they come to leave.
never walk to get a car. ever. time is of the essence
put on the heat when its cold, the ac when its hot.
don't drive the cars fast through the lot but don't pussyfoot either.
don't talk too much
do those simple things and you'll be making so much in tips you'll want to do it forever.