I had a bracket for the Gerhauer davit made for the side of the C Dory--in my case the Tom Cat 255, but the geometry is the same for all of the boats. I use the slide in SS rod holder brackets, so it is only about 3/8" proud from the cabin side. The upper support bolts through the lip of the upper roof, and this is easily removable, light weight and not in the way.
We each get on a side of the inflatable, and slide up up on the roof--both have bad backs, but it works fairly well for us--the Davit is there if we need it, which we may in the future.
Sorry I don't have any photos in the album, other than the mock up. The SS mout was about $60.