Well... Thanks to all of you that responded to my request. All very interesting. I am today starting to build this yacht and I will certainly keep you updated on the progress and comments. I also noted the comments on "poor quality" and perhaps extra care should be taken during construction and, if I find it necessary I will add extra strengthening. I noticed that the hull is very light and I believe that extra strengthening will certainly improve it. I am also planning to use different type of batteries than suggested in the instructions, heavier in weight which I believe will give some better stability in the water... We'll see. As for the 'Moonraker', I had similar comments from a friend but at the end I believe he is quite happy. My next project will be the Azimut. I believe Graupner build better quality kids and also, very important, better set of instructions.
Thank you all again and I'll keep you up to date with my progress and experiences....