not exactly what I asked, however
they seem to be managing boat speed in the 20's

perhaps the weight of structure to ballast ratio comes out somewhere close
then its a matter of drive (sail area) to drag, ..... you tell me?

doesnt seem prohibitively complex either
basically a foil in a wet well across the boat
at least the weights in the right place

of course, the things wetter than a prison system inhabitants dream, however
https://www.youtube.com/watch?v=undtIhahCik

there seems to be a lot of skilled designers getting behind it like Bruce Farr
and the presentation suggests theres a pool of money behind it
cant be all fluff and mirrors
but back to the question
is there anything in it for us?