Dude on the Skype group posted about using Up B as a frame trap. Been trying it out today, pretty effective. If they're below the stage, sit juuust blelow the ledge in Up B and you cover most options. If they're on the ledge, use Up B if they have a habit of buffering options - if they jump, attack or regular get up, you get your full Up B channel on them. If they roll, just Firefox in their direction.
For airdodges, there's like a million and one frame traps. I like jumping above them to bait the airdodge and then fast fall Uair - if they don't airdodge, you just Uair on the way up as standard. Dair covers side steps and three of the get up options. Ftilt is positive on side step so you can either ftilt again or just jab.
