1: Make you stance wider. Not just a little bit wider, but a lot. 2: With the wide stance, tilt you upper body so its close to being perpendicular to the slope the ball is placed at. 3: Your weight is now a lot on the front foot. Depending on the slope, it can be as much as 90-95% of the weight being on the front foot. 4: Last thing you need to do in the setup, is to place your hands forward of the ball so that the shaft is leaning with the slope.