Good Evening, Rexp,
Koni supplied a custom mounting bracket for the K-O cameras. It's heavy metal and locks securely onto the right-hand side of the camera in front of the focusing knob. A clip-type device was usually included and this made it possible to attach a potato-masher flash unit.
I used the mounting bracket and some 1/4" strap aluminum for a home-made bracket which holds a 285-type flash well above the lens. I can't flip it for vertical shots, but with the 6 x 7 negative, I've been able to get by with just cropping out a vertical section when printing. I keep thinking that I should replace my bracket with a more elegant arrangement, but inertia has so far prevented that.