I agree with Chris: a bit too much vignetting in the sky. Other than that, I really like this shot and the fact that the Cove is empty; each time I go there, there are quite a few boats in the Cove, which gives a completely different feeling to the pictures.
A very moody shot. Like Alex, my eye is drawn to and through the gap. The cove looks like a place I'd like to go to when I want to be alone to think things through.