Sorry guys if I'm missing something, but I just saw the title of this thread and though I haven't read it all, I wanted to comment on it.
Before becoming a tree climber and arborist years ago, I was a logger and one of the first skidders that I set chokers behind was a Franklin Treefarmer C6E. Great little cable skidder and it did a heck of a lot of work for us here in the hilly sections of N.H. where I live.
Nowadays, everything is grapple skidding and feller-buncher work, but I sure do miss those days of cable skidding. Hard, but satisfying work, if you know what I mean.