Last time I doubled the amount of stitches than the original pattern called for, to compensate for the skinnier sock yarn I used. Since I'd used about 1.5 skeins of sock yarn for that version, I was convinced that if I cast on just 50% more this time, that I'd be able to pull off the pattern with just the one skein. Alas no.
I toyed with pulling back and knitting fewer short rows than the pattern called for. And then thought better of it. My Mum's scarf looks so nice with the contrasting edging that I figured I'd do the same with mine.
I found some lovely grey mohair in my stash and knit with 2 strands of it for the last few rows of the ruffle edge, and to cast off. To balance out the grey ruffle edge, I added a couple of single crochet rows of the grey mohair to the cast on edge. Although I would have liked to have made this just out of the purple, I think the grey works well. An added bonus - it goes well with my new grey winter coat.
I think this is the most wonderful pattern -- a quick easy knit that results in a unique looking scarf that isn't too fussy. I see more versions on the horizon... and maybe I'll figure out that magic recipe for making it out of just one skein of sock yarn!