Golf Tutorials

How to Use a Square Set Golf Trainer

By Spencer Lanoue
July 24, 2025

A square clubface at impact is the single most important factor for hitting straight, consistent golf shots, and the Square Set golf trainer is designed to help you master that feeling. This guide will walk you through the fundamental movements and positions the trainer ingrains, transforming not just how you hold the club, but how you swing it from start to finish. We’ll cover everything from the all-important grip and setup to the sequence of a powerful, balanced swing.

What is a Square Set Golf Trainer and How Does It Help?

Before we build the swing, let's understand the tool. A Square Set trainer is a simple yet powerful training aid that molds onto your club's grip. Its purpose is to guide your hands into a perfectly neutral and "square" position, teaching you what a tour-level grip actually feels like. Many golfers struggle with a slice (the ball curving to the right for a right-hander) or a hook (curving to the left), and more often than not, the root cause is a faulty grip that leaves the clubface open or closed at impact.

The trainer helps eliminate that guesswork. By repeatedly placing your hands in the correct position, you build muscle memory. Over time, that "weird" feeling of a proper grip starts to feel normal and athletic. Think of it as the foundation of your house. When the foundation is solid and square, the rest of the structure is much easier to build correctly. This guide will show you how to build the rest of that house, using the principles the Square Set reinforces.

Building Your Foundation: Grip and Setup Perfection

The golf swing starts before you even move the club. Your grip is your only connection to the club, acting as the steering wheel for your shots. Meanwhile, your setup creates the posture that allows your body to rotate powerfully and consistently. The Square Set trainer locks in the first part, which makes the second part much easier to achieve.

The "Steering Wheel" For Your Clubface: Mastering the Grip

Your hold has a massive influence on where the clubface points. Get it right, and you're halfway to a straight shot. Get it wrong, and you'll spend your entire swing trying to make compensations. This is what the Square Set specifically fixes. Here’s the neutral position it teaches:

For your top hand (left hand for right-handed golfers):

  • Place the club in the fingers, running diagonally from the middle of your index finger to the base of your pinky.
  • Once your fingers are on, place the pad of your palm on top of the grip. Your hand should feel like it's on the side of the grip, not completely underneath or excessively on top.
  • Checkpoint 1: The Knuckles. When you look down, you should be able to see the first two knuckles of your left hand. If you see three or more, your grip is too "strong" (too far over), which can lead to hooks. If you can only see one or none, your grip is too "weak" (too far under), often causing a slice.
  • Checkpoint 2: The "V". The "V" formed by your thumb and index finger should point up toward your right shoulder.

For your bottom hand (right hand for right-handed golfers):

  • Your bottom hand should mirror the top hand, approaching the club from the side.
  • The palm of your right hand should cover your left thumb. Think of the lifeline area of your right palm fitting snugly against the side of your left thumb.
  • Wrap your fingers around the grip. Like the top hand, this hand should also feel like it's primarily holding the club in the fingers.
  • Finally, you can choose how to connect your hands. The interlock (right pinky links with the left index finger), the overlap (right pinky rests on top of the gap between the left index and middle finger), or a simple ten-finger grip are all perfectly acceptable. Choose whatever feels most comfortable and secure for you. The Square Set will help you position your hands correctly regardless of the style you choose.

A disclaimer: If you're used to a different grip, this new position will feel bizarre. That's normal. Trust the process. The Square Set is designed to make this strange feeling repeatable until it becomes second nature.

The Posture for Power: Nailing Your Setup

With a perfect grip locked in, your setup can fall into place. A good setup promotes balance and creates the space needed for your body to rotate. Many amateurs stand too upright, which restricts their turn and forces them to use only their arms.

  1. Start with the Clubface: Place the clubhead on the ground directly behind the ball. Angle the face so it's pointing squarely at your target. This is your anchor.
  2. Lean From Your Hips: Keeping your back relatively straight, bend forward from your hips. As you do this, your rear end will naturally stick out. This is the athletic part of the posture that feels strange to many but is essential for balance and power.
  3. Let Your Arms Hang: Lean over just enough so that your arms hang naturally down from your shoulders. You shouldn't feel like you're reaching for the ball or that your arms are jammed into your body. This sets the proper distance from the ball.
  4. Establish Your Stance: Your feet should be about shoulder-width apart for a mid-iron. This creates a stable base that’s wide enough to allow your hips to turn freely but not so wide that it restricts them. Your weight should feel evenly balanced, 50/50 between your left and right foot.
  5. Find the Right Ball Position: As a general rule, for short irons (like a 9-iron or a wedge), the ball should be in the very center of your stance. As the clubs get longer, the ball position inches forward. A 7-iron would be slightly forward of center, and your driver would be way up, in-line with the heel of your front foot.

Executing a Powerful and Coordinated Swing

Once your grip and setup are solid, the swing itself becomes a rotational motion. The Square Set trainer’s job is done at address, but its principles carry through the entire swing. Your goal now is to return that square clubface to the ball at impact by using your body as the engine.

The Backswing: Winding the Engine

Many golfers make the mistake of picking the club up with their hands and arms. A good backswing is a synchronized turn of your body, which moves the club around you.

  • The Takeaway: The first move away from the ball should be one piece. Imagine a triangle formed by your arms and shoulders. That entire triangle should turn away together, powered by the rotation of your torso.
  • Setting the Wrists: As the club reaches waist-high, allow your wrists to start hinging naturally. This sets the club on the correct upward path. You don't need to force this action, it's a gentle setting that helps the club stay on plane. This move is crucial for keeping the clubface square, a feeling the trainer establishes at address.
  • The Turn: Continue rotating your shoulders and hips until your back is facing the target. Crucially, try to feel like you are turning inside a "cylinder," rotating around your spine without swaying to the side. Your lower body should resist the turn slightly, building powerful torque like a coiled spring. Only turn as far as your flexibility allows, don't force it. A three-quarter backswing with a good turn is far more effective than a long, sloppy one.

The Downswing and Impact: Unleashing the Power

This is where it all comes together. The downswing is not a reversal of the backswing, it's a specific sequence designed to deliver speed and a square clubface to the ball.

  • The First Move: From the top of your swing, the first movement should be a slight lateral shift of your hips toward the target. This shifts your weight to your front foot and ensures you will strike the ball first, then the ground (creating a divot after the ball). This prevents "thin" or "fat" shots.
  • Unwinding the Body: Once that slight shift happens, the real power source kicks in: your body unwinds. Your hips lead the rotation, followed by your torso, which then pulls your arms and the club down into the hitting area. The arms and hands should feel relatively passive at this point - they are just along for the ride, being slung by your body's rotation.
  • Returning to Square: This body-led sequence automatically brings the club back down on the correct path. Because you started with a neutral grip (thanks to practice with your Square Set!), the clubface will naturally want to return to a square position at impact. You don't need to try and manipulate or "flip" your hands to square the face, the rotation of your body does the work for you.

The Follow-Through: Finishing in Balance

The swing isn't over at impact. A good follow-through is a sign that you used your body correctly and didn't hold anything back.

  • Extension: After impact, your arms should extend fully down the target line as your body continues to rotate. Don't stop turning your hips and chest.
  • The Finish Position: Let the momentum of the swing pull you into a full, balanced finish. Your chest and hips should be facing the target, your right heel should be off the ground, and nearly all of your weight (about 90%) should be on your left foot. You should be able to hold this pose comfortably until your ball lands. A balanced finish proves that you stayed in control and delivered all your energy efficiently through the ball.

Final Thoughts

Using the Square Set golf trainer is about embedding the fundamental feeling of a square clubface and correct hand pressure deep into your muscle memory. It simplifies the toughest part of the golf swing - the grip - so you can focus on building a powerful, consistent, and repeatable motion with your body, from your athletic setup all the way to a balanced finish.

Once you’ve put in the practice and built a more consistent swing motion, the next step is transferring that skill to the course. This is where real-time guidance can make all the difference. Our coaching app, Caddie AI, acts as your personal caddie and coach, analyzing tricky on-course situations. If you find yourself with an awkward lie in the rough or are stuck between clubs for an approach shot, you can get instant, expert advice on how to play the shot, helping you turn practice-range mechanics into course-smart decisions.

Spencer has been playing golf since he was a kid and has spent a lifetime chasing improvement. With over a decade of experience building successful tech products, he combined his love for golf and startups to create Caddie AI - the world's best AI golf app. Giving everyone an expert level coach in your pocket, available 24/7. His mission is simple: make world-class golf advice accessible to everyone, anytime.

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