Sometimes it's worth ignoring the rule of thirds. Especially when you can get a great reflection.
The shape of the clouds fanning out from where the sun had set looked great, especially with the bit of low cloud on the right catching the last bit of reflected light. Being able to get all of that reflected in calm water is what made the image.
This is another long exposure, ND filter fuelled image. Taken at Wellington Point, one of the few locations in Brisbane where you can get a sunset over the water. To see the view looking in the opposite direction go to - Moreton Bay Beauty