This is a location that I have seen a few times on DPC, definitely somewhere I would like to see for myself.
I think your image scored reasonably well for a best of challenge, but could probably have scored higher. I liked the image and gave it a decent score, 7.
Nothing wrong technically with the image, apart from, and this is just my opinion, the white balance. I realise this was a creative decision to boost the blues, but to me it feels quite strange and doesn't work. I'd love to see it reprocessed with a warmer WB setting.
As far as composition goes, I can't decide whether I would prefer a wider angle to see more of the surrounding scenery, putting the rocks more in context, or if I would prefer an even tighter crop. I know a few of the commenters stated they would like to see the foreground rocks somehow framing the picture more. I certainly would like to see the whole reflection of the background rocks. I have to say, I have no idea if that was feasible or not at that location.
When I first looked at this I thought it was fairly interesting. Then I read your title and took a second look and took more interest in the reflections. Once I did I realised I would like it more if you could see the full reflection of the background rocks without the foreground ones cutting them off!
Always curious about this place. Not sure if darker rocks in front builds this scene or breaks down whats behind. The really beautifull reflection at back is what I really want to see
I'd crop the bottom third so that the foreground rocks become a frame, rather than a distraction, for the main, sunlit rocks. Then crop a third of the right side of what's left to give more depth and balance. It then needs a touch of sharpening. - Just a suggestion - good luck.