I'm not sure why, but when I was younger I had almost this exact image in mind as the cover of almost every fleeting novel-idea that came up. (I discarded a lot of ideas before I wisened up enough to realize I'd regret it...) First it had a sillouhette of a girl at the end of the dock, her hair and skirt blowing in the wind. Next it didn't. Then it had two people side by side... Sometimes the sun was setting or rising. Sometimes the dock was a completely blacked-in sillouhette.
Anyway, none of the stories made it, and I completely forgot the whole idea. It's been a very long time. It just came rushing back to me when I saw this picture on my friend's camera.