Just a glitch I'd found when I was messing around with people in Basic Brawl.
I'm guessing it's only done in the stage Bridge of Eldin. And I don't if you can use this with other characters.
-Stage Bridge of Eldin
First, when a Smash Ball appears, break it until it you're able to use a Final Smash. If other players got it, just beat it out of them so you can get it. If the center of the bridge is gone, wait until the ship thing appears so the part will come back. Wait for a while, then go where the the bricks are restoring, then use Marth's Final Smash. But, the bridge stops him, so recover and go up to the bridge. Basically, you know how it zooms up to someone when they use a Final Smash Well, you'll still see Marth up close like he was using his Final Smash. I'm not sure if you can fix this, it'll just stay like that for the rest of the match. You can't see the rest of the characters of the rest of the stage, and if another person had done this, you'd walk up to Marth so you can see where you are.
Also, if I have anything wrong, please let me know.