Hi Ben, I;m not familiar with what a ‘flip’flop’ effect looks like. I can’t provide a solution to something I can’t visualize – can you provide an example?
TO duplicate an effect, you simply select it in the Effects Control Panel and hit CTRL+D (Edit>Duplicate).
HTH
– Roland
TypeGEMs – the Definitive Type Gizmo for AE
https://broadcastgems.com/typegems/
Intensive mocha & AE Training in Singapore and Other Dangerous Locations
Adobe After Effects CC ACE/ACI
Imagineer Systems (mocha) Certified Instructor
https://www.broadcastgems.com/mographintensity_shapestext/