Insight from Kelly O'Donnell on Backswing.com:
We have seen success with adopting swing length to dial in distance for shots inside 120 yards approximately.
We have seen success with adopting swing length to dial in distance for shots inside 120 yards approximately. Half swings with all wedges and note distances, 3/4 swings will all wedges and note distances will dial in most needed yardages. For even more precise measures, move down the grip as well.