I have had a Cibola, and now have a Vaquero, and would like to say that I too am confused by the term "no motion pinpoint" because I think that I understand, and am seeing the same thing you are. I am very interested in what others have to say about this subject, but I will tell you how I use the pinpoint.
I will press the pinpoint button and start a very slow sweep starting at the right or left side and try to cross the point where I think the target is. As the sweep approaches the target the tone will gradually get louder until the center of the coil just passes over the target, and at that point the tone will go quiet. Then I make another slow sweep starting at the back and push the detector forward and note the location where the tone just goes quiet again. I visually make a line horizontally and vertically along these paths, and where they intersect is where the target is. This has been very accurate for me.
If some consider that I am doing this wrong, or if there is a better way, I too want to hear a detailed example of how to use the pinpoint mode.
Best Wishes,
Scott