when i was living there, most of the shops would let you demo boats. but that was when they all knew me. i don't know if they will loan you a boat without knowing you, and knowing your abilities. they probably don't want to see you stuffed under some undercut in their boat. it has been about 5 or 6 years since i was living there. i'm not even sure what shops are still there or if there are any new ones. the names of a couple of shops were "beauty mtn sports" or "back country ski and sports" you might give them a call and see what they say
Beauty Mountain Sports. The manager is Richard Arrington... "Big Dick". Should be in the book, if not call ACE they used to own it. They demo lots of boats. If you are having a really hard time let me know and I'll get a hold of Richard for ya. Have fun.