ok..so after sucking sooooo bad at slalom, and reading bout other struggling..i figured out a way to beat it..and actually place 1st!
this is wat i did and worked after like 2-3 attempts..
1. adjust controls all the way to the right (only joystickt no nunchuck motion)
2.get ski's nmot a snow board
3. when u start the slalom, click "c" and pivot so u are facing backwords, now carefully carve through all the flags while going AS SLOW AS POSSIBLE..
i managed to comlete the first peak slalom and the first tournament with the slalom events without missing any flags at all
hope this helps ppl!!