Nice composition.
Nice capture Joe, +1 to Kodiak's comment about flash!
David
I like the sexy look of the sail -- the sail is what I have in mind when I saw it. I guess where it is situated, the floor is supposed to be the connected to sailing. And I love the time you took this shot -- the sky complements it. Nice composition. Maybe selective lightening will help now that you have already taken the shot? Just a thought...
Agree with the above good image that might benefit from some fill flash...
When I see a structure like this, I often thing how interesting a shot would be using a fish eye lens laying on the ground and facing up remotely tripped... I would probably start with the camera in the center of the triangle formed by the sail and the figures but, the two figures and the sail might appear too small. I might move the camera around to various places within the triangle; perhaps at the feet of one of the figures....
I am considering renting a fish eye someday, there are several structures in my area that I would like to shoot in this fashion. After using the fisheye, I might decide if it would be worth purchasing one....
I like it very much