I finally got my Canal boat simulator VR weekend project into a showable state. It's still very rough, but the boat physics are mostly ok, although the steering could probably be further refined. But as a proof of concept, I'm pretty happy...
It was built using VR Interaction Framework, Allsky pro for the skybox, Water Caustic Effects for the water and a Canal Boat art asset from the Unity store, a wooden boat art asset, and for the buildings etc FPS Game Assets for mobile.