RE: Hucker and mast
The SW Backbone 460 gives a tighter profile top to bottom in the Hucker 5.6.
Turns a fast bump n jump sail with a tight leech for big air and a full lower profile for great low end power into an incredibly fast and stable
slalom race sail.
Dale Cook has been well over 40 knots on a 5.6 Hucker (if I've heard correctly) and Bruce P. has used then sucessfully in Gorge Cup slalom races.
Very fast, very stable.
Hope this helps,