when ur in nado, u cant do anything about it, just hold up while inside the nado so that you get shot up so u can maneuver around afterwards(unless of course the nado is near a blast zone).
Things that beat nado, when the nado is on the ground, dtilt or dsmash it(although I personally don't rely on dsmash against nado). When the nado is in range, you can also up-tilt it which is what most ddds rely on. when you're airborne, ddd's bair beats nado if you hit the top corner pocket. When above it I'm pretty sure you can also nair fastfall through it though I don't rely on that very often.
And another one that I'm gonna practice on this week or so is probally pivotgrabbing nado.
Hope that helps
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