Hey @Fancyfoam, I know that many are creating stability with negative angle of the rear foil, but this creates drag that I don’t want to have at higher speeds. So my center of gravity is slightly in front of the main foil and thats enough for me. I go even little further, my rear wing creates lift in higher speeds, so the angle of attack is decreasing with increase of speed, and the system plains itself. To reach >20 knots, this is quite uselfull, to not waist too much energy. Stability an efficiency is always a little conflict 
@Felixeik I’ll try to prepare a list next time.
Thanks @VeFoil, your long torpedo like housing could easily be used to replase the fuselage