My approach. I found that having an uncoupled meter attached to a camera less convenient than I anticipated (it was a heavy Rolleiflex SLR) i decided to attach it to a cord which I wear around my neck. Voigtlander make an accessory to do this but it's bulky, so I drilled a couple of holes and araldited a loop of piano wire into the base, AFTER making sure that the loop did not interfere with any of my cameras' shoes (On the SL66 the meter is mounted from the front, not the back, and the loop doesn't interfere.
There is a photo at
near the end of the thread.