Hi Vile!

If you would like to take a look I have a submarine pic with a wake in my gallery.

As I remember it, this used the infinite water plane with another terrain for the wake doubled.

The bottom wake terrain was water and the top for the foam was raised just slightly and given a sea mist/sea foam texture then I played with the transparency to let the water show through more.

The top foam layer was a grayscale made in photoshop with a combination of noise/bubbles then taken into Bryce for the terrain.