270 On (Rail).

1. Before trying this, make sure you can ride a boardslide (90-on) cleanly and can spin a frontside 270 on flat ground.

2. Approach the rail at a shallow 30-45 degree angle at a slow, controlled speed.

   The angle lets your run-in cover the first 90 degrees of the 270, so it feels like you only have to spin the rest in the air.

3. Just before the rail, sink both knees deep (around 90 degrees) and load lightly onto your toe edge to build a coil.

   Keep your eyes on the exact spot where you want to land on the rail.

4. Extend your knees to pop straight up, and as you leave the snow lead with your head, both shoulders, and front hand toward the frontside (back facing downhill).

   Make one big arm swing. The upper body turning first pulls the lower body around after it.

5. In the air, pull both knees toward your chest to make your body small.

   The more you tuck your arms and legs in, the faster you rotate for the same amount of swing, which buys time to complete the 270.

6. When the board reaches the 270 position (sideways, square across the rail in a boardslide shape), extend your tucked legs straight down onto the rail.

   Land slightly toward the heel edge of your front foot with even weight on both feet.

7. The instant you touch down, stop your swung arm in front of your body and lock your head toward the far end of the rail.

   When you stop the turning motion the upper body stops, and the rotation stops with it. Think "stop swinging" rather than forcing it to a halt.

8. On the rail, keep your weight directly over the board and over the rail, knees slightly bent to absorb chatter while you slide.

9. Once the tail clears the end of the rail, square the board back to the fall line and land with even weight, absorbing through the knees.

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