This move is good, even if you can't pull off the FRC. Try something like "K 2D" and if it connects, cancel the sweep into 41236P (or 41236K or 41236H). You have to do it pretty quickly, but it will pin them down pretty well when they wake up, so if they try pretty much anything they will get hit.
You can also use it if they're across the screen. Just call one right over your head (make sure to hold the button down) and if he tries to get near you, release a barrage of dolphins on his head.
Oh also, besides the obvious comment that spamming 6H probably isn't a good idea, you can always cancel it into the dolphin hoop, which *might* make it a bit safer, and at least will give you more options.