Creep tuning usually applies to two cams, not one cams. It's basically that you tune the bow and sight in, now SLIGHTLY creep forward off the valley and shoot again, with most 1-cams you do this and poof you're gone it's such a radical change.

Creep tuning normally is done on the softer 2 cams as well. You play with the cables and limb bolts until you get the same grouping from creeping as from solid anchor. In this way it gives the most forgiveness to a moving anchor point.

--Bob