I feel that the first picture, if you were more to the left, and shooting the picture more to the right in order to get the jets more in the background, that would also look awesome.
Second one is a pretty good shot. I am trying to think of what I would change to it, but for some reason I can't think of what I would do. I keep wanting to say, bring up the bottom of the frame a bit to get less water, but then again, I like the way the water looks in the foreground.
With the third picture, I think you could of put the moped onto the left side of the screen, with more street in the picture......just my .02