If you've got short-ish cables you can usually get by with just the terminators on the drive.
If you run really long cables or multiple drives per chain, I'd get an active terminator.
The Flyer is terminated by default, so keep it on one end of the cable.
Just to make sure you know, you do want to use three separate cables, one per drive and controller. 3 on one controller isn't going to cut it.