You can have the best sequence, tempo, and rotation — but if your grip and arm structure break down at impact, everything falls apart.
Impact is where all the truth shows up.
The clubface, the path, the wrists, the pressure — it all meets there.
That’s why Kelvin’s work on impact stability hit me so hard.
He taught that a solid impact position doesn’t just happen.
It’s built from how the hands connect to the club and how the arms rotate into structure.
The Foundation of Impact
Most amateurs think of grip as personal preference.
In reality, it’s geometry.
The grip sets your wrist alignments, which control how the clubface behaves through the strike.
A weak grip forces a flip; a strong grip allows for stable rotation and consistent compression.
At impact, the lead arm internally rotates, and the lead wrist slightly supinates and flexes to square the face.
The trail arm stays externally rotated, driving the club through the ball with structure — not slap.
That’s the “impact triangle” Kelvin talked about: body rotation and arm tension working in harmony.
What I Now Look For
1. Grip pressure creates freedom, not tension.
Too loose and the clubface wobbles; too tight and the body stalls.
Pressure should live in the last three fingers of the lead hand and the index pad of the trail hand.
Firm enough to control, soft enough to rotate.
Personally, I prefer a firmer grip, but the wrists should stay loose and active — stable hands, alive wrists.
2. The lead arm is the anchor.
It’s not just along for the ride — it drives the geometry.
Internal rotation of the lead arm through impact stabilizes the clubface and supports forward shaft lean.
I like to see the lead elbow pointed toward the target — it keeps structure strong and the rotation continuous.
3. The trail arm supports, not attacks.
It provides structure and pressure, but it doesn’t dominate.
A good trail arm extends down the line without flipping under or collapsing.
Story From My Teaching
Michael — one of my students — started understanding how his arms worked through impact once we rebuilt his grip.
He had always tried to “release” the club by rolling his forearms.
That made his timing inconsistent — sometimes square, sometimes hook, sometimes high block.
I changed his setup slightly: stronger lead hand, trail hand more under, arms feeling more connected.
Then I asked him to press his lead arm into the shot — not pull it, just stabilize it through rotation.
The ball flight transformed.
His compression increased, and his low point stopped wandering.
He said, “It feels like I’m trapping the ball with my chest.”
That’s exactly what I wanted — body and arms working together through structure.
Once he understood that, the clubface started returning square automatically.
[Photo Placeholders]
Grip close-up — lead hand and trail hand structure
Impact triangle — arms, club, and chest connection
Trail arm extension — post-impact stability
Before-and-after — flip vs. stable impact
Closing Theme
Impact is where all your preparation shows up.
Grip sets the geometry.
Arms build the structure.
Rotation makes it all move.
When grip, arms, and body work together, impact stops being a mystery — it becomes a signature.
Call to Action
This is part of my How I Teach Golf (Inspired by Kelvin Miyahira) series.
Have you ever rebuilt your grip or arm structure and felt the ball compress differently?
Share your story — I’d love to hear it.
Editor’s Note
We’re still gathering the right swing photos and visuals for this series. Placeholders mark where they’ll go — thanks for your patience as we complete this resource.