I tried plugging my Wavebird in Port 3, 4 for the Menu holding Up on the Right + Left stick and pressing L & R nothing
That's because it doesn't work in port 2, 3 or 4. It works in the first slot.
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INGAME CONTROLS
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During ingame operation you can do some extra actions:
Wii Classic Controller Home - Go back to 'Menu'
Wiimote Home - Go back to 'Menu'
Gamecube pad L + R + LStick Up + Rstick Up - Go back to 'Menu'
Right Thumb Stick - Down - Fast-forwards the game
Right Thumb Stick - Up - Rewinds the game in real-time
('Rewind' has to be enabled in the
'Settings' menu - warning - comes at a
performance decrease but will be worth it
if you love this feature)
RStick Left + ZL - Decrease save state slot
Rtick Right + ZR - Increase save state slot
RStick Up + ZR - Load selected save state slot
RStick Down + ZR - Save selected save state slot
(NOTE: For Gamecube pads - you would press Z trigger + any of the Rstick
Down movements shown above instead of ZR/ZL)