BS Tailslide.

1. Approach the rail from your backside (back facing the rail) at a slow, controlled speed, straight on.

   Aim for the side of the rail and ride a line about one board-width away.

2. Just before the rail, bend both front and back legs to load, then unweight into an ollie.

   You don't need much height — just enough to clear the tail over the rail.

3. While airborne, twist from the waist down 90 degrees to bring the tail onto the rail.

   Keep your upper body facing your direction of travel (downhill); twisting only the lower body keeps you from spinning out on contact.

4. As the tail lands on the rail, shift your weight toward the heel side of your back foot and drop your hips directly over the tail.

   Set roughly 30 percent front foot, 70 percent back foot, keeping the nose slightly light so the tail bites into the rail.

5. During the slide your back is toward the direction of travel and your chest faces downhill, sideways to the rail.

   Keep knees bent 70 to 80 degrees with a low center of gravity, eyes on the exit of the rail. The rail sits behind you out of sight, so read its position through your soles and your forward gaze.

6. As the exit nears, ease off the back foot, untwist your lower body to bring the nose forward, return to even weighting, and land with knees still bent.

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