OK! im glad I have somewhere to post this. I cant believe I missed posting before the afore mentioned hydroplanning, but I did post in the general pokemon trainer analysis thread.
It is completely true that you can super wavedash just by itself without any upsmash! All you have to do is when you shell shift right to left for example after you press left you have to very quickly(and by quickly I seriously mean fast) and lightly push the control stick back in the opposite youll pull off an empty hydroplane. This means you can hydroplane any attack from weak attacks to tilts to smashs or even grabs.
Since I was the one who figured out that you could just hydroplane without moves with squirtle here on Long Island I named it turtle wax, but it seems like its gonna be hard to compete with hydroplanning
As far as squirtle goes try this out- shell shift to weak attack, 3 uptilts, then grab
Always a nice opener for me