This rail-type putting practice aid can be used on your putting mat or on a flat, level surface at home. It offers two sides with different difficulty levels for practicing. You can visually check your stroke and ball roll to ensure you make short putts within 1 meter. Place the ball in the hole marked "BALL POSITION" on the main body. The side with the 3.5mm wide groove rail guides the ball easily, helping you develop a feel for rolling the ball straight. The side with the raised rail is flat and more realistic, making it more difficult than the side with the 3.5mm wide rail. With the correct stroke, the ball will roll straight on either side. Even a slight opening or closing of the face will cause the ball to go left or right. Through repeated practice, you can master the fundamental putting stroke of "pulling it straight back and pushing it straight through."
■ Practice rolling straight on a 3.5mm wide grooved rail.
The "Putt Checker Long" has two sides with different difficulty levels. The side with the 3.5mm wide grooves is designed so that the ball rolls straight along the groove rails from the ball's starting position. The groove rails act as a guide, so if you hit the ball in the sweet spot and strike it with the correct face angle, the ball will roll straight along the rails.
■ Practice in a challenging, flat, convex lane that closely simulates a real game.
The surface with the raised lane is flat and grooveless, making it closer to a real putting surface and thus more challenging. Practice repeatedly to get the ball to roll straight over the 10mm wide raised section. If you miss the sweet spot or if the face is even slightly open or closed, the ball will drop to the right or left, allowing you to visually identify your putting tendencies.
■ The ball set markings can prevent head-up.
By keeping your eyes on the "BALL POSITION" circle located at the ball setting position on the main unit even after you've finished hitting the ball, you can prevent lifting your head. Additionally, there are two types of guidelines from the ball setting position towards the backswing side: a "vertical line" to help you hit the ball squarely and a "horizontal line" to help you focus on pulling the club back straight. By aligning your backswing with the "vertical line," which is drawn at approximately 3cm intervals, you can also develop a sense of swing amplitude and distance.
