This lesson highlights the importance of Rule #4 in doubles tennis: when moving back, you must hit a lob with under-spin to gain control of the point. The instructor explains how moving back in the court requires a precise lob aimed at the blue bucket, located behind the back service line. The technique is crucial to buying time and avoiding poaching, offering an opportunity to reset the point. Players learn to execute under-spin lobs, emphasizing their strategic value in match scenarios, particularly when under pressure to win critical points.