[MN BB Ref]

Admittedly I'm not an expert on mechanics yet as this is my first year officiating H.S. football. However I have been to a few clinics and all the clinicians I have worked with have told me to follow the play OOB up the sidelines. You are responsible for any out of bounds spots, as well as any fouls that may occur trailing the play.

I'd be interested to hear from more experienced officials as well.