Arrr! Tree Pirates! Actually, no, this hook is not used for evil but for good! We use this high strength hook to quickly access different parts of a tree or even another tree nearby to where we are already climbing. After setting one line as our primary safety point we then use other rigging in order to safely and comfortably get into all parts of the canopy. The hook is specifically shaped to self locate the best grip on the branch it is tossed onto. By using Captain Hook we can increase our speed maneuvering around the tree and is especially helpful while pruning.
Below you can see how a climber can now ascend this rope, anchored with Captain Hook, up a different limb of the tree.