Location feedback

It's hard to tell from the web-size image but it looks like shoreline in front of the rock formation was where the lens was focused, leaving the rock a bit soft. The location is lovely and I really do like that formation. A few suggestions I might offer would be to use the natural slant of the rock to point into your frame in such a way that it doesn't end, crossing your vertical centerline. It creates an imbalance and compositional tension that is uncomfortable to the viewer. I've attached a crop as an example of the change I'm suggesting. The change is subtle while the effect is not. Since your rock is taking up so little of the composition, you're telling me a story about a rock that rests in beautiful surroundings (Single subject with an environment that contributes to its value). By placing the rock at the lower left intersection of 3rds -keeping the rock from passing center- it allows the rock and surrounding scenery to play nice together. The rock is still the subject due to its position and contrast but the background is helping to make it more interesting to the viewer. If the rock took up the greater portion of the composition, you'd be telling me a story about an interesting rock (strong, single subject). Next time you're there, maybe try both ways to shoot it. Hope that at least gets some creative juices flowing.