....explain further the rational behind this approach to choosing the Runner or the Bone....
Tim, the two tools have distinct differences, in fact about the only thing they have in common is they are both fully mechanical. Either one will do a good job but the differences, for people that have both, can lead to trim vs removal preference.
The Bone can be removed from the rope with no finesse or worry of dropping it or a part. It self-tends slack easily when going straight up and down the rope. All these things make it particularly well-suited to the heavy and messy, and mostly, up and down removal jobs.
The Runner, with its bottom pulley, will tend slack effortlessly regardless of the work angle. This is huge in the convoluted and awkward angles often encountered on trim jobs. There are many "finesse" movements in trimming and this blends in well with the Runner's personality.



