Release Notes
Notes from the bay — plain explanations of the spin variables that shape ball flight and roll more than most golfers realize.
Roll Conversion and Toe Hang
Why the distance it takes a putt to stop skidding and start rolling true is a better fitting signal than a head's toe hang label alone.
Read article →Lie Angle and Spin Axis at Release
How a putter's lie error tilts the face at address and shows up as sidespin the instant the ball leaves the putter face.
Read article →Stroke Arc and the Release Window
Why the shape of your putting stroke sets the narrow window during which a putter head has to deliver the face square.
Read article →Driver Spin Axis, Explained
Sidespin and backspin aren't separate things — spin axis is one number that explains both, and why it matters more than clubhead speed for shot shape.
Read article →Groove Wear and Spin Decay
How much stopping power a wedge quietly loses over a season, and why it happens well before the grooves look worn to the eye.
Read article →Attack Angle and Spin Loft
Why two golfers with identical clubhead speed can produce very different iron spin numbers, and what attack angle has to do with it.
Read article →Put This on the Release Bay
Reading about spin mechanics is a start — seeing your own numbers captured at the Release Bay is where it actually clicks.