I remember me that maybe 15 years ago there was a guy in Holland who tried exactly the same design on a beach cat. But then with 1 mast and one sail ; so the mast was aft. His name is Nol Twigt, but I can't find a picture anymore in my old magazines.

I presume it was not a succes because I never heard or saw anything about his cat anymore
You can also contact his brother Fredjan Twigt.