I ran into this now… can confirm this is the only method I’ve come up with as well and it currently works.
Very boring and tedious … but in the end the result is great. The maximum step that can be used is 50 cm in order not to have visual problems.
Until now, MSFS/Asobo hasn’t helped us one bit on this. In SbuilderX there is an option to create sloping bodies of water… if only you could have it in the MSFS SDK it would be great.
