If you own the ART Spiderjack or are considering one in the near future have a look at the video below produced by Into Trees Joe Harris.
The video is just over 13 minutes long so you'll need to set aside a bit of time. But it will be worth the effort!
Note part way through the presentation, Joe references a few new options for the Spiderjack (available early next year).
Thanks to Spiderjack climber and regular Treetools Blog contributor Adam Hartshorne for this lead