Elevation
Every 3 feet elevation equals 1 yard in Distance.
Example
The hole is 150 yards
with a drop in elevation of 30 feet
3 goes into 30 = 10
Subtract 10 from 150 = 140
Example
The hole is 175 yards
with a rise in elevation of 21 feet
3 goes into 21 = 7
Add 7 to 175 =182