Lovely b&w and very nice framing with the trees. The fence does cut the image in half, and I find myself wishing the fence wasn't there. My eye travels out to the horizon and the fence seem to cut off my view. From the "perfect world" stand point, this would be great with the rock shoreline and no fence.
The framed subject is kind of a small piece of the composition I think. You did a great job controlling exposure as the clouds really pop out. The upper leaves and the rocks would have made a decent frame by themselves...the fence/posts I find somewhat distracting.