Lunker,
If your friend is 6'3", I calculate his board would be 4.9 ft off the water if his legs were extended.
I think Chad's got it pretty close in his altered pic - I calculate 9.8 ft in that one. :-)
But hell, I wish I could get as high as the first pic. My new profile pic is probably about as good as I ever do. I figure just under 3ft.
Gary