Interesting image. My comments: 1) I would have increased the saturation of most of the image and increased the contrast a bit in the sky. 2) I would have cloned out the marker buoy in the water - that is the first place my eye went when I looked at the image, as well as that vertical weed to the left of the bench. 3) I would have moved the bench up slightly and placed its centre along the lower thirds line. Hope this helps.
WesternGuy