If you ever head up to Sugarloaf and have your desired sled(s) along...
Just outside of Kingfield, southside, there is a nice medium size hill beginning just off #16...no sled rentals around that I know of...but from the side of the road it is a nice smooth drop and runout across a huge field...
fwiw..
EDIT: Yep, it is indeed the Kingfield Golf Course...