I have developed enough post processing skill in over an year to create moods in my photos as I prefer (mainly dark moody photos with low saturation).
However, when it comes to showing drama in the sky with vibrant colours, I really suffer. Often, I realize that a lot of visible colour noise has developed in the water portion (fast shutter with enough ripples) in the process. I always remove in-camera colour noise before changing any kind of tones in the image. Have a look at this recent image I have been working on, what can I do to avoid it: