Just a feasibility study. I will work on the details soon.
I was on search for a most easy way to animate the poolwater very calm (otherwise I would also need moving leaves on the bushes).
A watershader with 0.00 waves and a softened displacement shader with 4d noise work OK!
I will try another animation test with less noise variations and hope it will not look like now with higher waves on the left side than on the right side of the pool.
Also too fast moving camera spoils a little bit the effect.
Enjoy: