It looks difficult but it's actually an easy cable pattern. It's the crossed arrow cable stitch pattern. CO 28 stitches for a 6 inch width. For a 9 inch height I repeated rows 1-16, 2 times total, then did rows 1-12. I used a 10.5 needle.
Loom Scarf made with a circular loom, the red one. I used Lionbrand Wool Ease Quick & Thick. "Fisherman" I used the entire skein. You might want to buy 2 if you want a longer scarf. With 1 skein it measured 42 inches long. It's 6 1/4 width when using 16 posts. It was done in stockinette stitch using the "knit over" stitch. I included links to instructional videos from http://www.youtube.com/ in case you are new to looms.