Are pipe rules simply there for the initial creation of a pipe network to get things roughly in the correct location? And then you fine tune the layout/design in a profile view? That's kind of the way it seems (to me). Maybe I missed that in the C3D help files but I'm just looking for some validation.
(I've been away from AutoCAD/Civil 3D for so long so I'm sure I'll have more questions. The Revit world makes so much more sense.)