Hi Steve. Firstly I would say that the placement of light coming right over your shoulder and smack into his face has killed the
modelling, and it is a shame that you didn't quite get the bow of the kayak in focus. Bumping up to 5.6 or even f8 would have been okay or drop your ISO to 200 and use f5.6 would still have been fine in a steady situation like this. Gotta remember the extreme length when photographing these critters and the effect that has on depth of field.
Now for the fun part. If you had stood up in your kayak with your nice, expensive D200:shock: , you would have dropped his head below the water horizon and the framing would have looked a little better. (Coming from a fellow kayak paddler, I would like to see you try it before I did.

). Try it again if possible and even try raising the camera over your head with a slightly wide angle and crop later.
Maybe not half under the tree shade? too. I would still try sharpening only the bows of the kayak and select the shady? aft sections of the hull and apply some selective Levels to give the foreground areas a little kick.
After all that, it is a nice shot and he should be proud to receive it anyway. I had a very quick stab at it if you don't mind.
