I want to say something about the hydro grab that might make things easier on people. Ok, so while I was attempting the hydro smash I kept on accidentally going the hydro grab, It frustrated me a bit because that is not what I wanted. When I eventually got to Hydro grab and started attempting it, the sudden change in C-stick direction like it describes, screwed me over. I play without tap jump on (if that makes a difference) to make a long story short I found that simple you do a shell shift and at the right moment(like all the other attacks, it's around the same time) and press Z and hit the C-stick down at a 45 degree angle. It's easier for me to to it when Squirtle would be grabbing to the left, the right is a bit hard for me, I keep doing the pivot Hydro f smash. Try it out, it works, I'm too lazy to post a video, so sorry about my laziness.