For his lv 2, I just wait til people get bunched up. Another way is bait the oppenent to attack you while guarding and quickly activate it, but theres this wierd glitch that you can get picked up right when you activate and you lose the super.
I haven't found the best solution for his Level 1, I've tried the Aerial B Launcher, but I may be a bit slow because it rarely connects for me.
As for his Level 2, I play with the opponents mind, and try to stay aerial, and when I land, and they're all grouped up. Level 2 Activate!
I avoid using his Level 3.
I somehow have been timing his supers really well lately. I got 3 double kills with it in a match. I'd say besides setting it up if you get just far away enough from somebody while they're comboing you could get some good kills off that. I do wish they would extend his lvl 1's range though.