yo-yoing
n.— «The defendants use a technique called “yo-yoing,” wherein one bulldozer sits on a level surface at the top of the hillside.…and the other bulldozer which pushes the tress and brush down the steep hillside is connected by a wire rope to the rear winch assembly of the dozer sitting at the top. The winch is used then to anchor the lower dozer and to assist in pulling it up the hillside after it makes passes to push the trees and brush down the steep hillside.» —“Charleston man suing over on-the-job accident at Fayette County mine” by John O’Brien The Record (Charleston, W. Virg.) Feb. 23, 2006. (source: Double-Tongued Dictionary)