PAL version is working fine for me on my NTSC 4.2u using latest USB Loader GX.
First thing I noticed... it asks you to plug in a nunchuck, even if you're using the balance board. You use thumb stick for turning, foot pushes, stopping and vert transfers. Buttons on wiimote are used for kick flips and grabs, you can modify them by leaning one direction or another on the balance board and by using A, B, or both. Ollies and nollies are done by giving a sharp pressure to front or back of balance board (also used in vert pumping)... balance board is also used for balancing your grinds. I'm still trying to figure out how to add spins in to tricks... or if there is manuals (riding on your front or rear wheels only).
Game isn't overall too bad, for sure more accessible and enjoyable then EA Skate was on Wii (that was extremely difficult on balance board). It may have been a good idea after all to make turning using the thumb stick... makes the game a bit more accessible as some would fine using the balance board overwhelming. EA Skate's issue was the kick flips were very complex, there was 6 "zones" on the balance board for you to put pressure on to cause different maneuvers... that was on top of leaning for steering, air spins and much more. This is a pretty fun game right on par with Shawn White Snowboarding... I personally prefer snowboarding, but that's more of a personal sport preference. But Shawn White games are still is a good series on the Wii.