[wulf]

I see that I'm swimming against the flow on this one: I prefer the original version, with two even blocks of sea and sky. The dividing point could perhaps be a little lower, as the hills intrude onto the sky which makes the darker portion of the image take up more than half the space but I think the result is more striking than 2/3 | 1/3.

In other words, if it were my image, I would be drawn to playing with treating the image as two vertically hinged panels instead of thinking so much about the rule of thirds.

Wulf