Not a good 2nd plane to build and to fly. The parts dont snap in place like most beginner aircraft. Its old style contruction that relies on the modelers building experience. Sheeting a wing could be very easily done but also easily screwed up if one dont pay attention. Some beginners have built sheeted foam wings with huge air bubbles between the foam and the balsa. Also the kougar is not designed for a 4 stroke engine, on the contrary its a speed demon and it benefits from high rpm 2 stroke engines. As I just mentioned, its a fast sensitive airplane with a high wing loading which limits the slow flying characteristics that beginners need specially at landing time.