Super Smash Bros. Cheats for Wii U

So, I was messing around on the screen that comes up while you wait for friends to join, and I discovered that if you hold your shield button(s) and move really fast from side to side, your shield doesn't go down. I have never tried this in a battle, but as far as I can tell, doing this can mean you can keep your shield up for a long time without recharging. Pretty neat eh!