Very nice. The cloud in the first image is really strange, but mostly, I think, because it is excellently highlighted by the light behind. I think #2 is my favorite, wonderful colors.
I really like #2. That is cool. Your #3 shot does have too much pop. Notice how you started to blow out the clouds in the sky? You can do something similar, but use a layer mask so that the sky doesn't get effected, and maybe do it a little less.
I actually like #4 better then #1. I mean, #1 is nice, and cool in it's own way, but I wish the boats were lit up a bit more in that one.
