In the manual for my Rolleiflex Automat there is an emphasis on a taut neck strap for taking a sharp image. Often a Hasselblad is held high, using the magnifier for accurate focus and the forehead stabilizing the camera. In the Rolleiflex manual they recommend shortening the strap with one hand (or both hands, depending on how the camera is to be) by wrapping the strap around the hand if shooting with the magnified focus. Ernst Wildi who wrote the Hasselblad manual was a big proponent of the monopod. I’ve had very sharp images with that, even at 1/60s. I’m still struggling with the Rolleiflex.