I think the idea of HDR for this image is a good one however it appears to be overdone, hence the cartoon look to the image and the blown out areas in the water.
Seems a bit bright and oversaturated to me. Something just doesn't look right to me, but I'm not totally sure what it is. Perhaps this one has just too much detail to fit into 720 pixels.
This is visually very interesting. Great capture. I am giving it an 8
Ps. I have an entry in this challenge myself as well but it's not really going anywhere.
The tonal range seems a little out - perhaps a little too heavy handed with tone-mapping or shadows & highlights? A pleasing composition, though, and certainly worth trying some alternate edits.