If I remember correctly, I asked about this high poly ground a few months ago,
and there is a setting to change to make the ground "ultra flat" or something.
Only when I tested this, it was wonky. The physics seemed to be amiss,
maybe even fell through the ground?! I can't remember, something bad.
So would the effect of a water terrain work? IE instead of all those other
selections like asteroid, ice, desert, etc. Water is not available, but since
you are discussing it, that might be a good one to add??
Or... add a texture to 'paint' 'water'!
IDk?!
Obviously you wouldn't get any of the 'water' effects that are present in
the actual water plane. Do you want any of those effects?
Would want at least a highly reflective texture if that's possible.