billy-goating
n.— «Bell and Hebert’s freestyle-influenced riding differs greatly from what is called “billy goating.” Billy goaters pick intricate lines down the mountain face, hopping and turning into tight rocks and placing themselves above precarious ledges that they then drop.» —“Two snowboarders with Fairbanks ties try to conquer The North Face Masters” by Casey Grove Daily News-Miner (Fairbanks, Alaska) Apr. 13, 2008. (source: Double-Tongued Dictionary)