You could search for the incredibly rare 6x6 back for the RB67
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Can you develop a habit where you hold the camera in a way that you can tell by feel how the back is oriented?
With my Pro-S, I tend to wait until I am just about ready to release the shutter before I wind the film. That gives me the necessary reminder.
But with my older Pro, that would cause double exposure problems.

Can you develop a habit where you hold the camera in a way that you can tell by feel how the back is oriented?
With my Pro-S, I tend to wait until I am just about ready to release the shutter before I wind the film. That gives me the necessary reminder.
But with my older Pro, that would cause double exposure problems.