I just did a job today where I had to shoot between 600 to 800 bikers(Harleys)leaving the first checkpoint on a charity run and the client only wanted one shot per rider. It was spaced out by 100 or so shots on 2gig cards. Once I shot one card he (the client) would run it to a booth at the end point to display it on a screen at an event.
My client not only wanted one shot per biker but each shot to be a slow ss pan shot (motion blur the bg). The trick was that many of the riders came in clusters so I didn't have time to reshoot....
Starting on film can teach you alot.
