When repairing wind turbines became his full-time job five years ago, Josh Crayton was awed by what he calls "the fantasticness of it all." "It didn't seem real," Crayton, an avid rafter and rock climber, recalled of his first days at Rope Partner, a Santa Cruz, Calif., company. "To get to use my climbing skills and my rope knowledge was great." Rope Partner soon had him climbing up 260-foot turbines with a rope, a harness and a partner. As many of the world's wind turbines are starting to age, avid outdoors enthusiasts like Crayton are finding themselves increasingly in demand to help maintain and repair them.