There's U-Tube of the Disneyland flying circle action somewhere on the web. Saw it recently...
A member of my CL Club, Cholla Choppers of Tucson, flew for Disneyland for a while, Yeah, he was much younger then. So were we all.
Bart is most likely one of the featured Disneyland fliers in the U-Tube, but I don't recall it naming the guys. Interesting stuff, anyway.
They had practically a 'factory racing team' setup going. Always planes that started and flew (or were quickly replaced by one that did.)