Originally Posted by Lamps
I've been throught the pipe a few times and if you're scooting back and forth and not getting air then it's very safe and pretty easy, and soft falls, while I've yet to get the guts to try to get on a rail; the thought of falling on something made of metal seems like an easy way to get hurt myself.
Start on some low boxes and work your way up. Some parks make it so you could ride across a box and almost not even know it. Knees slightly bent in a relaxed position, make sure you stay flat based, and look to the end of the feature not your feet.