i didn't think the flats at heavenly were much of a problem. the first day it was kind of annoying because i didn't know where they were, but once you know you just need to remember where to keep your speed. there were like 2 or 3 stretches of 15-20 feet where i had to unstrap. that's just the nature of a mountain that's shaped like that one. that being said, i wouldn't recommend heavenly to anyone who's more advanced, i'm not gonna go back.