I have a quite usefull strategy involving the Side Smash.
When I'm thrown quite far up in the air out of the platform, I start charging Quick Draw. Instead of releasing it at the ledge or on the opponent. I release it over the opponent, I will fly over the opponent and past behind him on the platform. When I touch the ground, I do a side smash in the direction of the opponent.
The idea behind this is to set a trap to the opponent. Especially if he is near the ledge, when I side B behind him, his first reflexe would be to run toward me, making him totally vulnerable to a side smash especially if he don't see it coming.
I don't know if Quick Draw happen to auto-cancel at this height, but doing a side smash when you touch the ground after Quick Draw, happen really fast.
The idea behind this trick is to put a trap at the opponent, letting him think that I'm vulnerable when I'm actually preparing a side smash and if the opponent bait for it, it's too late. All in all, it's a hard read, trying to force the opponent to do what you want him to do.
I need more pratice to get this trick done correctly and it's very situational, but each time I put it on, I always got my target. It's really more usefull at the end of a match, that's when people get their guard down.
I have a video of it, I will be able to show my technique other than in word, it might help figure it out.