I think that the dogbone will be sweet. I had some frustration with the double-biner set-up on removals today. Mostly I was spurring up with a choked climbline, and when I was ready to descend off the top of the spar, riding the HH/ distel down.
I was trying HRC spliced eyes on PI at first with a 4/1 wrap, using the top biner in a dogbone style with some rubber bands to keep it centered. . I couldn't get quite enough friction. When I was on 5/1, which was really using every bit of the cord, I was having too hard of a time tending.
I switched to tied-eye Ice tail on PI, but couldn't keep the biner centered in the dogbone style, and had to use put on my Hitch climber and use the top biner in the end to end position. Think I used the distel 5/1 set-up successfully.
Paul, did you say you used the Michoacan?
I really like the idea of the dogbone and no pulley. As with any tied knots, its imperative to get them right, and a possibility for a mistake. As always, I'll test my new life support system (retied HH) before removing my proven one (lanyard) which I would be relying on during the transition.
I spent all day in spurs, so no rope ascending. Weather permitting tomorrow, some spurless work.