“I’m the only redneck mountain boarder in Costa Rica,” Chad Crow said one windy afternoon in the hills above Heredia, north of San José. Shirtless, with dirt smeared across his back, face and tattered ...

Imagine the thrill — or fright, perhaps — of mountain biking downhill at top speed, dodging rocks, trees and other obstacles. Now imagine trying to stand on a skateboard as you head down that same ...