The Peacock shawl's pattern requires moving markers. A lot. For the first four charts, I laboriously removed the marker and replaced it where it needed to go. In the middle of chart 5, I realized that I could just push or pull the stitches back and forth over the marker. This probably wouldn't be worth it if the marker has to move over multiple stitches, but it works just great for single stitches. A singular Duh moment I've never seen mentioned anywhere.