Using a figure 8 for descending the tree - WesSpur's Niceguydave demonstrates a classic tool
Many climbers are familiar with the figure 8 from their background in rock climbing, caving, or mountaineering. This classic tool has largely been replaced in tree work by Hybrid Work Positioning Devices. The figure 8 has the advantage of being inexpensive and compact, and some still like to use if for descending a stationary rope system. A figure 8 should always be backed up with a prusik.
Basic Installation of the figure 8 on the climbing rope 0:45
Descending the rope on a figure 8 1:36
Installing the figure 8 with prusik backup 3:00
All figure 8s and other descenders available at WesSpur:
https://www.wesspur.com/tree-climbing...