In case you can't WaveBounce, Reverse Aerial Rush to B-Reversed Aura Sphere can take its place, but anyways, always remember that in order to WaveBounce, you have to B-Reverse your Special attack which is easiest with Aura Sphere as Steam has said:
Button Input:
WaveBounce Left =
![Gamecube Joystick Right :GCR: :GCR:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
(Run right)
›![Gamecube X :GCX: :GCX:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
(Jump while holding right)
› ![Gamecube Joystick Left :GCL: :GCL:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
(Quickly flick analog left)
› ![Gamecube B :GCB: :GCB:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
+
![Gamecube Joystick Right :GCR: :GCR:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
(B-Reverse)
WaveBounce Right =
![Gamecube Joystick Left :GCL: :GCL:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
(Run left)
›![Gamecube X :GCX: :GCX:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
(Jump while holding left)
› ![Gamecube Joystick Right :GCR: :GCR:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
(Quickly flick analog right)
› ![Gamecube B :GCB: :GCB:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
+
![Gamecube Joystick Left :GCL: :GCL:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
(B-Reverse)
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When you set your C-stick to Specials, inputting a WaveBounce is easier & convenient, only having to press left or right on the C-stick.
WaveBounce Left =
![Gamecube Joystick Right :GCR: :GCR:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
(Run right)
›![Gamecube X :GCX: :GCX:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
(Jump while holding right)
› ![Gamecube C-Stick Up-Left :GCCUL: :GCCUL:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
(Specials diagonally towards the left)
WaveBounce Right =
![Gamecube Joystick Left :GCL: :GCL:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
(Run left)
›![Gamecube X :GCX: :GCX:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
(Jump while holding left)
› ![Gamecube C-Stick Up-Right :GCCUR: :GCCUR:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
(Specials diagonally towards the right)