I might do that.
Here's an updated version. I'm not quite satisfied with the foam running down the rock, so I stretched the fractal a bit more and sped up the 4D, also stretched the wave mask for it a bit, so it stays longer (hoping that works). And added foam remains. I was hoping to get some sort of tails behind the foam activated by the ridged part of the waves, but I don't quite know how I can achieve that, as that foam is masked by the waves, so as soon as they die out the tails will die out too. Now I added some independant tails in the next version.
EDIT: Just got an idea; stretch the wave mask in Y for the tail remains....
Btw. detail 0.4 AA2, so the whole lot rendered in 80 minutes.