This is a really great tutorial, but there is one important problem with this technique. The foam edge disappears when there is no geometry just under the water

This is a really great tutorial, but there is one important problem with this technique. The foam edge disappears when there is no geometry just under the water surface. It looks terrible when you have a pole in the water for example. https://i.imgur.com/ECzIw4b.png https://i.imgur.com/ECzIw4b.png