BS Boardslide (Rail).

1. Approach the rail from the backside (heel side) in a straight line at a slow, steady speed—just enough to keep moving.

   The faster you go, the harder it is to hold balance once you're on, so start with the minimum momentum that reliably carries you across the rail.

2. Just before the rail, bend both front and back legs slightly to sink down, then pop off the tail (back) for an ollie.

   Track along the rail with your eyes to line up the height and spot so the center of the board lands right over it.

3. While airborne, keep your upper body open toward your direction of travel and twist only from the hips down 90 degrees to the backside so the board turns sideways.

   If you try to turn your whole body, the rotation stalls partway, so turn only the lower body.

4. Land with the area between your bindings (the center of the board) on the rail.

   Weight your front and back foot evenly at 50:50 and press down on the rail through the whole of both soles. Keep your knees bent about 70 degrees to stay low, so your legs can absorb small wobbles.

5. On the rail, push your hips forward right over the rail and fix your eyes on the far end.

   Because the rail is behind you and out of sight, your body tends to back away—the farther you look ahead, the more your torso stays upright and the more stable you are.

6. As the end of the rail nears, unweight to lift the board slightly, then turn your lower body back the opposite way you twisted on entry—toward the frontside—to straighten the board down the slope.

   Catch the snow with the nose (front) first and bend your knees to absorb the landing.

You can pin your own clip to the tricks you've landed (My Video).