Stitch markers are your friends.

I started the Crest o the Wave scarf (and I do think it is the "right" pattern for this yarn). Except, I kept screwing up in one of the early rows and having to rip back. Finally, on try #3, I put in stitch markers between each repeat (and between the two "edge" stitches and the start of the pattern itself)

NOW I'm doing it right. If I get enough done on this by tomorrow evening for it to be photographable, I'll post a picture.