*Won't the hidden fig still add geomtrt to the sceen?

*Why would that be a problem if it did?

You wouldn't see it and it wouldn't show in the render.
I guess it could be an issue  if memory is a problem, I wouldn't know of any other way except modelling.
Maybe someone else will have a better idea, it was just a thought.
I know it works, I've used it myself before!

Injustice will be avenged.
Cofiwch Dryweryn.