BTW, this game is not working for me yet, but I m making like you for others games, 2 wiimote with only 1 dolphinbar in mode 4, but for that you need to use some applications like Touchmote and Demulshooter.
It work realy fine for all games, With the mode 4, you can add 4 wiimotes, Touchmote convert your wiimote in joypad relative + keyboard (or mouse if you want, lot of options possible), and Demulshooter convert Relative joypad to absolute joypad, and can add some missing options.