I have this little sandbox scene where I had issues with foam sometimes being under the mesh. Angel Tena commented and uploaded a graph that snaps the foam to the closest position on the mesh, and it worked awesome, really cool that you guys take the time to hang out and follow all the stuff that's going on.
Here's how it looks for now, I haven't really tweaked the emission settings so it's all pretty standard, but no foam under the mesh!!
https://vimeo.com/69575225