Good Lord! If you fly Control Line You should know some of the history!!!!
Jim Walker was the first, best, and most famous. Flying more than one plane was only one of the many things that he did in a wonderful show that he did all across the country. He first flew two, one in each hand, then three, adding one to a helmet on his head. the planes that were held in his hands had a push button that electrically advanced and retarder the spark in the ignition engines. The handle on the helmet, controlled by his head movements, had a throttle switch button held in his moth and operated by biting down. When he added a FOURTH plane it was attached to his belt buckle. The plane did not have controls so when it flew it simply lifted off and flew around him. Jim then flew the others in formations around that plane making it appear that he controlled them all.
Larry