Ok, since you have refraction and an ocean floor neatly set up I see why you're preferring to use fresnel. I suggest making the ocean floor very dark, so you have enough contrast against the lighter parts of the water or else it'll keep flat the way it is - so far the only part where we see the normal-map noise is at the reflected sun; you need a darker ocean floor so the other parts are visible as well.

You should also make it greener:

- Look at the first screenshot you posted.
- Then look at this one from real life: http://i39.tinypic.com/348hjs7.jpg. Your ocean floor should look as dark as the part that's shadowed by that boat. Notice how the back of every wavelet is colored by that. 

My real-life reference is a lagoon-like environment click
But yes I could indeed try to use better colors.
thanks