I think you need both since the camera mechanics (at least on my Norma) gets in the way. There is simply a limit to how close I can get the standards. One thing I found helped was raising front (lensboard) and rear (back) since the bagbellows tended to get jammed between the parts sliding on the rail.
I use my 65 on both my F and P quite well without the recessed board and are able to apply moderate movements without fouling the bag bellows. The Norma is a different camera than the P, which the OP has.