is another arborist knot. I've read that it holds well, but I
haven't had much luck with it. The various coils seem to bind
on each other rather than tightening and subsequently loosening
easily like I would like. I could probably get better results
if I played with the sling materials and diameters, but this knot
seems to be fussier than most, much like the Spong.
The performance of any ascending knot depends on the diameter, material, construction, and condition of both the main line and the ascender knot sling material. It may also depend on exactly how one ties the knot. Your knot's performance can easily differ from mine.