Paper tuning will imprint the arrow flight at a specific distance. You may luck out and find the correct settings using this method, but how much time do you want to spend to tune your setup? Bare shaft tune and with the correct arrow for your draw and weight setting you will have a fine tuned setup. I'm not concerned what my arrow is doing at 6’ or 10’, I want to have my arrows flying true, impacting at the same point with my field tips and broadheads. This can be done with proper bare shaft tuning.