Attaching Lines.

Not too long ago I posted a video on attaching a second climbing line to the original ascent line via a carabiner, midline butterfly knot and a fisherman's bend. Here's the same application but with a rated steel ring rather than a biner. This is my preferred method.

I typically deploy this anchor in very large canopies, when I need to advance to a desirable primary suspension point after my initial ascent. I bring my second line up with me and advace with a doubled system and then repel to my original access line and connect the ropes. It's really just a version of the popular triple threat concept but installed after entering the canopy.