I would just like to go on record that I didn't suggest that.
I wonder if you agree with me that the canoe and people don't stand out enough in the version that is entirely monochrome. If so, brighten those areas of the image before converting to monochrome. Then adjust the level of brightness after seeing the results in monochrome. In my version shown below, I initially brightened those areas to the same degree. When reviewing the image after it was converted, I realized that the front of the canoe was too bright. So, I removed some of the brightness in that area.