Begin by finding an obstacle that's the right height for you.

Ride parallel to it as fast as you feel comfortable - like you would if you were going to do a frontside 50-50.

Ollie like you're going to do a backside 180, but only turn the lower half of your body 90 degrees.

This is important: keep your shoulders parallel to the ledge.

When you're over the ledge, push your board down into the rail slide position.

While sliding, try to keep your weight centered (it helps to look at the griptape between your feet).

When you reach the end of the ledge, unweight yourself, turning the lower half of your body back to its original position and...

ride away...