I think if you clip a carabiner to loop end of tether and clip to step above your head, use a kong duck in place of prusik and pin the tag end between the bottom step and your foot when you step it would work.This is my only hangup from using this method. I wonder if there's a way to attach tether to stepp above head, and have progress captured as you climb. I'm thinking hitch and tender, with some type of redirect on the tag end of tether. As you step up it pulls slack hands free.