Burnquist rides an elevator to the top of the ramp, about eight stories above the ground. Even though he built a replica in his own backyard, the drop isn't routine for Burnquist: "I've got a level of respect for it because I ... have slammed so many different ways. I've seen what can happen."
Reaching speeds up to 40 miles per hour, Burnquist drops to the takeoff ramp below. To clear the 60-foot gap with a 540-degree rotation, he must hit the takeoff with precise speed and spin or risk a hard landing. "A lot of these younger kids don't know the consequences. I hope they don't get to know it."
The sweet spot
The spin is critical to a smooth landing. "If you're off axis, you know you're going to end up in a weird position," Burnquist says. This gap is long enough to allow for minor corrections midair. "I can turn my body forward or a little backward, but it can't be too much."
The vert ramp
"Contrary to belief, there are no Velcro [straps]," Burnquist jokes, so holding onto his board and forcing the landing with strong feet is also a key heading right into a 27-foot quarterpipe. "You have to land full speed in order to take the quarterpipe."