Corduroy
The board is honest against a pin, not against a thumbnail.
Every morning Quinn zeros the board on a pin we keep in the shack. If the zero drifted, patrol does not open.
A thumbnail is a story. A pin is a number. Pitch is written on the card in degrees, toe and heel separate, because plains wind does not wear a run evenly.
We will show you the skid where the grade went green. We will not show you a cartoon trajectory. If you need a cartoon trajectory, David Street still sells those.