Yes, just as you mentioned, too much. If that was a woman she would be hard to look at.
The dispersion density should decrease as it travels through the air.
Have you given any thought to making a bit of a water wake and less dispersion at the water level, similar to how a boat pushes water ahead of itself at low speeds?
Here's some water displacement brushes to help you unless you want to create the effects yourself? I'm using CS5 also and I installed these brushes.
»miloartdesign.deviantart.com/art ··· 73732663
»anarasha-stock.deviantart.com/ar ··· 44162536
For those that are unfamiliar with installing brushes in PS. Unzip ABR brushes to or from desktop 'move to' C:/Program Files/Adobe/Photoshop/Presets/Brushes folder.--
Stop The Mindless Killings Stop Over Fishing