While my swing has generally been on plane, using Lag Shot I found that I had close to zero lag. Yes, could hit the ball straight, but not far. I believe Lag Shot is helping me with my sequencing to create that lag, thus a little more distance. It is a great "warm up" tool at the range as well. The videos that come with the Lag Shot 7-iron are very good - even without the Lag Shot.
Swinging this “tool” the proper way for at least 20 times without stopping improves both tempo and timing…and by repeating the “20 swing set” several times during a practice session is like adding fuel to fire👍👍👍