>>673870People get pretty serious about doing SRT. Usually mechanical ascending devices (aka Jumars, jammers, etc.) are used. Yosemite style aid climbers do it too (they call it jugging), but they are basically improvising "meh" ascending systems utilizing their daisies and aiders. Not the safest or most efficient by any means.
Here's my current set up. I have two lower ascenders (one attached directly to my right foot and the other attached to my left foot via a knee length foot loop) and one upper ascender (the one with the handle in the picture). I also have a device called a chest roller that holds me upright. I can either do something akin to the two knot method of ascending, standing in my foot loop, moving up my upper ascender, sitting down on it, moving up my lower ascender, repeat; or I can attach the chest roller and the ascender on my right foot and walk up the rope, alternating weight from one foot to the other. The former method is very maneuverable and the latter is incredibly efficient for free hanging pitches.
