inb4 pokemon stadium 4th roll lmao
If you are onstage jumping off towards a recovering Captain Falcon, you can intentionally get caught by the upB (or more usefully, when you accidentally get caught by it), charge rollout facing side of the stage the Falcon is recovering from, and let her rip.
If you are offscreen, up high, next to the blastzone, and want to recover more quickly, you can charge rollout and time the release for either just above the ledge, so you land onstage, or right at the ledge to sweetspot it. On long stages like FD, you can even just rocket yourself to the other side of the stage (You'll need to turn instantly on landing, or you'll blast off.
I've also seen it used for shieldbreaks when using rest isn't worth it (and when f-smash isn't disrespectful enough)
Also, *supposedly* when you're turning in rollout, her hurtboxes disappear briefly.
DO NOT:
-Go offstage with it. You'll die (unless you hit someone within ~1 Jiggly-diameter from the ledge -- close enough to bounce back onstage)
-Use it when cornered. (Obviously not if they are already close, but) If they can close the gap quickly and just take the hit, you'll bounce back and fall offstage with no way to recover.
-Try to land on a platform when recovering with it. You'll either miss and die, land on the platform and keep going and die offstage, or land on a platform, be forced to turn on it until your rollout runs out, get punished for being an easy target stuck on a platform (and possibly die.)