I’ve hunted for hillsides of color like this enough to say how impressed I am with this location, @frazer-family. The rocks make for excellent foreground material to break up an otherwise flat and depth-less body of water.
I like the composition in the horizontal photo more than in the vertical photo. However, as @dan-cope pointed out, everything of interest is on the right side. And not only that, but the elements all seem to be pointing to the left, they all seem to slant that way. This is one thing I find very difficult with large-lake scenes. There’s not generally anything of shape or interest out in the water to balance the naturally heavier shoreline.
I don’t’ know what it was like where you were standing but to help with this compositional difficulty, I may have tried looking for a birch tree (or something with “picturesque” bark) growing on the same shore you were standing on to use as a frame the left side of the image in the foreground. Just a thought . . .
I think the colors in the vertical shot work better than the colors in the horizontal shot. Whether this was a change in white balance or a tweak in post, the warm glow appears really nice. And it doesn’t look like a tint covering the entire image, because the blue in the sky and water keep it from looking overdone.
Another thing I really like about the vertical shot is the smaller rock in the front. I would have tried to do more with it, by getting closer or zooming in closer to make it a more prominent element in the scene, especially if you were able to go wide with it. The rocks on the left also help balance out the scene.
This is such a great subject there’s just so much to talk about it! But in closing, I’ll say that it may have been interesting to see this shot with a long shutterspeed, made possible with an ND filter. The smoother water (especially in the horizontal picture) would add a professional touch to the picture.
Overall, it’s a great subject captured very well!