David Patchin is a PGA golf instructor at Carlton Oaks Country Club in Santee, a semi-private course in the hills east of San Diego designed by Pete Dye — the only Dye design open to the general public in the San Diego region — that plays as one of the most challenging and distinctive daily-fee experiences available to golfers in Southern California. The Dye design is characteristically aggressive: railroad tie-edged bunkers, island greens, tight landing zones, and penalties that are genuinely severe for the wrong side of the course, all combining to create a layout where course management and calculated risk-taking matter more than any other dimension of the game. Patchin's instruction at a Dye course develops players who think carefully about their decisions and develop the ball-striking reliability needed to execute their plans when the consequences of missing the target are immediate and concrete.