What is the best way to tie a loop of webbing around a vertical anchor so that it does not slip down?

Using a wrap 3, pull 2 is the most effective method for creating a secure loop of webbing around a vertical anchor that will not slip down. This technique involves wrapping the webbing around the anchor three times before pulling it through itself to create a hold. The multiple wraps increase the friction against the anchor, thereby maximizing grip and preventing it from sliding down due to the weight or dynamic forces placed on the webbing.

The design of this hitch helps distribute the load evenly across the wraps, ensuring stability and security in various rescue scenarios. This is particularly important in technical rescue situations where reliability is critical, and any movement or slippage could compromise safety.

In contrast, the other methods such as a girth hitch or basket hitch may not provide the same level of security on a vertical anchor. A girth hitch can have a tendency to slip, especially under tension. A basket hitch, while useful for certain applications, may not provide adequate friction on a vertical surface compared to the wrap 3, pull 2. Cinching the webbing back on itself might provide a temporary solution, but it lacks the structural integrity needed for a secure, non-slip hold in the context of dynamic loads during rescue operations.