Pre-Shot Calculations for Distance Control in Golf: The C.H.E.W. Method

Carry Distance

Understanding the carry distance—the yardage a golf ball travels through the air from impact until it first touches the ground—is fundamental to shot planning. Key factors include:

• Club Selection: Different clubs are tailored to maximize distance for varying swing speeds and conditions. Choosing the right club based on the intended carry distance is essential.
• Swing Mechanics: Clean contact is critical. Factors like stance, grip, and swing path need to be synchronized to maximize distance control.

Heat (Temperature)

Temperature significantly influences golf ball performance, affecting how far it travels:

The data indicates that golf ball distance increases with temperature. For every 10°F rise, the driver gains about 1.5 yards, the 4-iron around 1.4 yards, the 7-iron approximately 1.4 yards, and the pitching wedge roughly 1.2 yards. This trend suggests golfers should consider temperature when choosing clubs, especially in extreme weather, to optimize their game.

Elevation (Uphill/Downhill)

Elevation changes can drastically alter shot outcomes. Adjusting for elevation is crucial:

• Uphill Shots: These shots generally require more club, as the elevated terrain demands extra power to ensure the ball reaches its target.
• Downhill Shots: Less club is needed for downhill shots since gravity assists in carrying the ball further.
• Technology Assistance: Many apps and rangefinders can calculate adjustments for uphill and downhill shots, aiding golfers in making precise decisions.

Wind

Wind, a factor that significantly influences the trajectory and distance of golf balls, also poses significant psychological challenges. Understanding wind dynamics and its psychological impact is key to feeling enlightened and prepared.

Rice's Wind Formula

Developed by Andrew Rice and Chris Broadie, this formula simplifies adjustments for Wind:

• Into the Wind: Add yardage equivalent to the wind speed in mph, such as adding 10 yards for a ten mph headwind.
• Downwind: Subtract half the wind speed in mph from your distance, e.g., subtract 5 yards for a ten mph tailwind.

Misjudging wind strength is a standard error. Using a reliable weather app to measure wind speed accurately can help golfers make more strategic choices.