The original is an excellent image. I've done three tweaks:

* slight cropping to remove distractions at left and right edges
(second flagpole and mystery object)
- this also brings the tallest mast onto the thirds line

* adjusting the levels to give a bit more contrast

* cloning out a few bright spots which drew the eye away from the boat and house
(one in the water and a few on the bank below the house)