Nice images, but I do agree with what others have said, however, I have one question/comment - when I shoot sunsets, I will take the shots as you have and try to get the sun behind some clouds, if possible, to avoid it being blown out, also I will wait until the sun is just below the horizon because I often find that I get more play of colours in the clouds just after sunset. Have you tried this with any good success. Also, have you thought about using HDR for sunset images across the ocean, I did some on a holiday at Naples last year and had some great success, at least in my opinion...
Cheers,
WesternGuy