Tony, composition is fine, but post processing needs work.
As far as composition, the hill along the left edge should be cropped off as there is not enough of it. Along the right edge you have a boat chopped in half and it should be cropped off as well. The bottom edge, you have a rock the is chopped off at its bottom edge and it should be cropped as well.
One thing you can't fix is the sail reflection falls onto the large foreground rock. Would have been better if it was fully reflected.
Post processing: The sky is not very lively. It looks as if you tried to bring it around but it is still not very interesting. You might try carefully post processing in a new sky. The rest of the image needs contrast and saturation bumped up. The white thing in the water should be removed and the stick in the upper, left quadrant.