I really love this photo conceptually. The pose is perfect. The boat looks impossibly small and adds to the sense of vastness of the water. Unfortunately, the figure and boat look over zoomed and flat.
This a fantastic picture ... just acouple of comments. The boat is centered the rule of thirds would make this pop. Also probably the wrong challenge ... I tried to see the land.
Very minimalistic. I like the composition of the shot, but I think it would have more interest if the water had a bit of color in it. Perhaps try taking a shot like this at sunset? Cause I think you've got something with the small boat in a large picture...really gives the feeling of the magnitude of the water.