The Dogtown kids started applying their surfing techniques to concrete, riding low to the ground with their arms outstretched for balance, skating with such intensity that they often destroyed their homemade boards in a single session. “We were just trying to emulate our favorite Australian surfers,” Tony Alva says, explaining the genesis of their new low-slung, super-aggressive style. “They were doing all this crazy stuff that we were still trying to figure out in the water—but on skateboards, we could do it.”