This is the most random, ******ed section of the PAT. I would put more time into the other sections that you can actually master (Keyhole, TFE, Cubes, holepunching). I would have included pattern folding but that section just blows anyways and I think you get less return on time invested.
Bottom line, I would ignore angle ranking because even if you have the eye of a hawk, it will jack you up!