Finally got a good focus on some of this grass. I'm not sure I like the background here (too much blur, not enough in focus? Or just a bad angle?), but it's my best attempt so far I think, aided by a wind-free moment. The lump in the background is an outcrop of rocks.
I think this is your best cotton grass to date. My eye is drawn to the ones in focus at the rhs front and the blur in the background adds to the overall scene :)