David, It would be interesting to see the original un-cropped, un-textured version. I see that you shot it with a D2X at ISO 100 (on the D2X, ISO 200 will give you better results since that's the sensor's native sensitivity), and with a 5 second exposure. The long exposure accounts for the unfortunate motion blur in the sloop in the background, but I'd guess the texturing accounts for the blurring of the fake lap-strakes in the bow of the boat in the foreground.
I agree with Eric. I don't understand what advantage the texturing adds, and the sky is an important part of the picture. I certainly wouldn't lop off the mast on the sloop. Since the original aspect ratio is 2 to 3, I can't help but wonder what's in the other third of the picture.