For what mstreurman say about that you need to change your settings for the unofficial build, this isn't true. You just need to map on your gamepad some modifier keys. Even old PC game like Tomb Raider used one for walking/running (Hold Shift (modifier key) + WASD).
Recently, there's also someone who is working to implement the emulated MotionPlus in the official build. But there's still a lot of work that need to be done, before to have something as awesome as the build of Peterson.
Anyway, it will always be a pain to understand how to configure properly a Motion Plus Game. Even normal games are hard to configure for new users. So the easiest way to configure it, it's to use bluetooth passtrough (not Dolphin Mayflash).
Recently, there's also someone who is working to implement the emulated MotionPlus in the official build. But there's still a lot of work that need to be done, before to have something as awesome as the build of Peterson.
Anyway, it will always be a pain to understand how to configure properly a Motion Plus Game. Even normal games are hard to configure for new users. So the easiest way to configure it, it's to use bluetooth passtrough (not Dolphin Mayflash).