My first reaction was to think there is too much water in the foreground. If you were to crop it from the bottom to make it say a 3:1 ratio pano, (is it 2.5:1 at the moment?) I think that might balance it a bit better. Just a thought.
Now, that I like. I think that's made a significant difference.
An alternative would be to crop the sides and concentrate more on the reflection in the water.
Either way, getting closer to the 'action' will help.