Ya man, my parents made me do it...kinda sucks...im a 5'2 freshman going against like 6'5 seniors in Gs...no fucking chance, its alot about gravity in that, but anyone can dominate slalom.  Plus 3-4 free rides a week to a mountain is not bad considering both runs usually total around 1;40 seconds.  Too bad my coach doesnta llow twin tips to practice....Anyways, yeah it definately does help, my friends like the same as me in the park, but when we get on open trail, hes left 20ft behind wishing twin tips didnt spit up so much snow behind them.