I was on the nose and tommy caldwell and beth rodden were right ahead of us - they were just going to dolt tower with a client. caldwell led off, and before beth started to climb, i found myself staring at her belay loop. "hmmm", i thought, "beth rodden's belay loop..." then i thought, "hey look, she has two mini traxions attached to her belay loop!" i asked what was up, and she told me about her tr solo rig. she was ascending solo on a fixed line with mini traxions while tommy dealt with their client errr friend. "Tommy showed it to me," she said, and then she was gone. thats how i learned how to get great mileage in on tr solo, by looking at beth rodden's belay loop.