With some waste yarn, and the backwards loop cast-on method, CO half of the necessary sts . Do not join to knit in the round.

Now, join main yarn and work as follows.

Set-up Row 1: *(K1, yo). Repeat from * to 1 stitch to end of row, K1. Turn work. Be patient! this row is a bit uncomfortable to work.
Set-up Row 2: *(sl1wyif, K1) Repeat from * to 1 stitch to end of row, sl1wyif.
Turn work.
Set-up row 3: *(K1, sl1wyif). Repeat from * to 1 st to end of round, K1.

(Note! If you are going to work in the round, PFKB the last stitch of the row and join.)