Loop Turbulence

I have a scene that I want to loop, but I don’t know how to loop the turbulence on a MoSpline.  Does anyone have any suggestions? 

two failed attempts:
- Shader Effector with Noise looping on Fracture object moves all parts independently, no cohesive movement.
- Pose morph doesn’t seem to work at all… maybe it only works on polygonal objects, and not MoSpline?

Thanks for your suggestions and help!

Seth