Good light and nice subtle colours. I also like the details in the sand and the wave action. Here is my cropping suggestion. This crop leaves the rim-lit rock and the sun at opposite golden means, balancing the shot perfectly.
Steve, this is quite eyecatching. I minimized my window and used the bottom to crop it out, and it does leave a nice picture, but I think the dark rock and long shadow perform a nice balance with the light, detailed sky. You seem to have a progression of intensity that grows as the eye travels upward. Almost a spiritual message - if that's not too hokey a description.
Of course, crop the rock and you're within the rule of thirds, so what do I know? sos