After mulling over the heel methods I know, I decided to try a short-row heel in linen stitch. I thought the first half went fairly well. I completed my arch expansion, switched to my black yarn and knit around to my end-of-round marker. (Due to the jogless joins at each color change, the marker had migrated around to almost the center of the sole.) Then, I started with the linen stitch - RS: k1, slip 1 with yarn in front; WS: p1, slip 1 with yarn in back; being sure to work the stitch that was slipped on the previous row and slip the stitch that was worked on the previous row.
The first half was: