1919  There are innumerable firms that have monopolized the services of the best hooker that ever gave signals for the high-rigger, while his short-handed crew changed the haul-back without the assistance of a grass-line.
1942  HAULBACK. A lighter line coupled to the mainline which hauls the logs in from the woods, operated from a second drum on the donkey through an arrangement of blocks. Its function is to draw the mainline and chokers back out of the woods to pick up a fresh "turn" of logs.
1966  Whether the mainline was to be pulled in, or the haulback to go out . . . or stop all operations depended on the correct number of whistles.