This post is not meant as an argument for static versus contingency rigging. I’ve seen people learning to convert a static block to a method of lowering, assuming that someone is stuck on rappel for one reason or another. The methods are all similar, you tie a valdotain tresse or similar to the tensioned rope, clip a biner to the anchor, then use a system with a sling or Purcell prusik (2:1, 3:1, etc) to haul the person up far enough to unweight the block and rerig. I question if this method is truly effective after a practice session today with full weight (~160 pounds plus the friction over the lip) on the rope. My question is, have you ever converted static to lower in a canyon and if so, what method did you use? I was able to easily haul with my pulley, some rope, and a 3:1 system, but my partner was also much lighter than myself. Thanks for any contributions.