Oh God, uhhhhhh... don't get all excited about it.
#1 You can take them to 300% but most of the time you only do 80% or so because the stupid electric tip gets in the way. You can get better at it and avoid the electric tip part though.
#2 There are no direct set ups, this is a punishing tool only and the foe can bait to get you to use it. If you fail it is a free hit for them unless they are Jigglypuff.
I guess what I am trying to say is... this doesn't deserve super hype. Once a Sheik can do it often and basically get a free stock then you can hype it up. Because if it gets hyped up before, people will demand data and I wont be able finish my other projects!
ps This has been known for freakin everrrrrrr. I've known about it for at least two years and Ankoku/other release date Sheik have probably known about it for almost 3. Thing is, no one could ever do it 100% of the time. That is why I am looking at it now. The newer method is faster than c-stick twitching and more proficient. IDK if it is even new though... might be one of those little known and simply not talked about things.