Doesn't look like this guy, but I remember seeing a young lady at Dayton who used hair gel to put her fairly long hair into a pointed "up do", and at the pointed top, she install an antenna. Talked with her a couple of times and she had a great sense of humor.
73 de N8AUC
Eric
PS - the guy with the yellow hard hat also had a BNC connector in the top of the hat. It had a cable that ran down to his belt. The BNC was for an HT antenna that connected to an HT on his belt. Might have been a different guy though. But if you go to hamvention, eventually you'll see lots of odd things.