Hello.
We focused on building classic Airboats. So now we're testing diffrent shapes of hulls. Airboat 5 was simple construction however AirBoat 7 has changed sides and front of hull. Bottom has been also changed but it is still flat.
On photos below you can see two Airboat7 hulls, ribs and bottom is the same in these two models, but one of these has been covered with balsa 3mm, and second linden-balsa plywood 3mm. The difference betwen weight of models is huge. We will see how it affect on controllability of models.
Weight of linden-balsa hull.
Weight of balsa hull.