Cable for Furling

I'm having problems designing a cable that will furl the tailbone of a water pumper. I've seen some examples in the SW forum and YouTube. The cable I'm trying to design attaches to a winch and goes up to the water pumper platform and finally attaches to the end of the tailbone. I also have a pulley on top of a post that will rotate as the tailbone furls, so the cable needs to turn with the tailbone. I tried creating the cable in the assembly using 3D sketch, but could not get the Swept Boss to work. Eventually I will create an animation of the tail bone furling. Any Idea would be appreciated, thank you.

SolidworksAssemblies