So you all know of my love for Vampy, but these unfortunately pretty much died out with Arrow.
The reason I'm making this topic is that designing rollercoasters is my dream job, and I think I may have come up with a way inversions could work on these (however, I'm probably wrong, so correct me if I am).
Basically, I think a long inline twist could work on a swinging coaster, as the swinging would probably work in your favour (if I got the physics right) at the right speed (not too fast, not too slow). There wouldn't be too much swinging during the inversion, however a bit after.
Could this work? Please let me know. We don't do Arrow Suspended Coasters in physics lol.