1. Some golfers come over the top on the downswing because they did not complete the shoulder and hip turn on the backswing. It is an easy fix to just have them complete their hip and shoulder turn to solve this problem.
2. The number one reason most golfers come over the top on the downswing is because they turn their shoulders before they swing their arms down. Simple solution; swing your arms down as your hips slide slightly towards your forward foot to start the downswing before you turn the shoulders.
Note: The reason golfers make the mistake of turning their shoulders first on the downswing is because the shoulders “feel” like the major power source because of the tension built by the core muscles on the backswing.