"OK, i wanna do this for show basically, maybe in a match like when me and my partner are fighting one person, or if I see a reason for it, but how the heck do you do it. I haven't even been able to do it once.
I can get the shuffle thing, and the animation for it or whatever, but I have yet to slide. How exactly do you do this, what's the input? Thanks"
The Shuffle Glitch is performed when you move the control stick very slightly to catch Dedede in-between his moving and stopping animation. My best explanation is that it causes the game to read a rapid forward movement and this causes him to move at very fast speeds. Speeds he wasn't originally programmed to obtain (Running Dedede is slower than Walking Sonic).
Sometimes, when you stop after using this glitch, you will stop after a bit of skid. Other times, he skids for quite a bit. Sometimes, he'll have very little aerial movement if he goes off the stage. Other times, he'll actually kill himself off the side of the screen if he goes off of the stage.
Overall, it is relatively hard to pull off and doesn't always yield the same results. IMO, it's easiest to do with the Gamecube controller. Then, it's second easiest (I would assume. I haven't been able to do it with this but that's because my Nunchuk has sensitivity issues) with the Wii Remote + Nunchuk. Then, it would be the Classic Controller (Again, not sure of this as I don't own a Classic Controller. Never felt the need since I have a GC controller). And last comes the Wii Remote held sideways. It's possible. I was able to get the Wii Remote alone to perform this glitch. It is really annoying because it's hard to get the directional pad to stay at the point it needs to stay at for this to work, but it is possible.
I'm going to experiment around with it a bit more. See if I can find out what causes it to sometimes cause D3 to fly off the stage and other times resume normal aerial movement. That, and I've noticed that eventually he starts slowing down. The Shuffle moves slower and slower after a while and eventually it's faster just to walk.
I will work on this more to figure these things out and find out the answers to these questions.