I would like to discuss the different aerodynamic designs of wig craft. Any insight or information would be greatly appreciated. To get the conversation started I am interested in a longer range craft powered by twin engines, either Chevrolet motors or aircraft motors. A craft that is similar to Airfish8 or Aron 7 and the new design from Aron the MK200. Where do you start on testing different designs aerodynamic properties? Right now I'm just going to start by trial and error which will become expensive rather quickly.