I see a lot of folks post about the difficulties in using the Extrude Along a Path command. I too used to have difficulty with it as it is not the most intuitive tool to use in my opinion. That being said, I have figured it out over the years and recently discovered a convenient use for it to define complex assemblies that follow the same path.
See the attached .vwx file to learn a little EAP kung foo. Gain the understanding of why profiles seem to have a mind of their own and how