maybe not the most efficient and it does require the belayer to be somewhat close but this is how i have A0 some routes.
while having belayer hold me on a piece that is at waist, I place a piece higher. WHile holding the waist piece draw, I yell "slack" and get the rope into higher piece. Immediately yell "take" and then sit on higher piece. Yard on rope going to belayer to pulley myself higher. Take when at waist level and start over. avoids all the fussing around with slings and whatnot but pieces are not as far apart as with usual aiders and daisies. Pieces must be bomber or else you fall extra length due to introducing slack into system vs kurthicks methos.
I believe my system evolved from standard free climbing and losing my cool. I would like to think that I got in over my head but the reality is that I am a less than bold climber.