shouldnt be that big of a deal.  I rode my twin tips which are centermounted and it was ok.  One thing about out west that I have learned is that it really is hit or miss.  i have been out there 5 years in a row so 5 weeks total at breck, whister, park city, steamboat, and vail.  and i have only had maybe 3 powder days of about a foot and a half each time.  that might just be me tho.