Theory was if you get in trouble pull the rope and the other side will spin instead of the wire side, doesn't work quite as good as intended under testing.  Never had to use it in a Oh **** moment yet.  Been thinking about adding a hydraulic cylinder and a wire catch to move the wire back and forth on the drum, as it is now 1 guy stands back there with a bar to move it back and forth and the other stays in the tractor.  Adding the cylinder would only require 1 guy.