The ultimate solution was the overhead or cableway skidder, where the cable was raised at both ends - from the skidder boom to a tree or stump above the loading area. A carriage with sheaves rode on the overhead cable, pulled out and back by another cable loop, and with still another cable which could be raised and lowered from the carriage. This enabled log loads to ride well above the ground obstructions. (See carriage photo at right.)
see picture in link