Wave modifier is good, pretty intuitive to use. I tried a few variations with different speeds, heights, and multiple instances, but I ended up going with this. Definitely has a vibe to it that I’m liking.
What I really want now is a way to combine the two systems… maybe get some of the collision with the rocky shore without having to go through the trouble of the adding liquid process. Maybe there’s a way to add the wave modifier to a liquid mesh, or add a wave plane on top. I want to do some more research on the ocean system. Might just come down to keying in particles manually.