PGA Pro Marcus Edblad explains how to achieve 'effortless' swing speed by utilizing smart effort rather than raw physical force. He demonstrates how focusing on the trail arm's bending and extending motion—the 'circle of speed'—can produce 300+ yard drives while fixing common slices caused by lagging clubheads.
Effortless doesn't mean no effort; it means using smart effort by focusing on the clubhead's speed rather than your body's rotation.
The trail arm acts as a throwing or pushing mechanism—bending in the backswing and extending through impact.
Over-rotating the body while the clubhead lags behind is the primary cause of slicing for 90% of amateur golfers.
Speeding up the trail arm release helps square the clubface and prevents the ball from leaking right.
Focusing on the hands and arms is often more effective for amateur and senior golfers than trying to mimic the high-speed hip rotation of young pros.