Remember when we used to dream about draining the pool so we could drop in on our BMX bike and ride the walls? Now, it's all about carving up the back lawn and creating a miniature single-track trail that winds through the yard complete with banks, berms, and jumps. The trick is riding through the course without making a single pedal stroke. That's right, all the forward power is generated by pumping the bike through the turns and over the humps. The problem is, where are these private tracks? All over the Valley, it turns out, but good luck finding them. To get a taste — and tips on how to DIY — head over to Rage Cycles in Scottsdale and try a run on the course tucked behind the shop.