You may also want to check out the new "magne-traction" shapes that
lib-tech has;
http://www.lib-tech.com/tech/magneTr...eTraction.html

If you haven't seen them, the board edge is wavey, not the traditional
sidecut straight edge.

I was riding with a guy last week who was demoing one of these. It was
a pretty icy night and he was very impressed with the edge hold. Then
again, most brand new boards have pretty darn good edge hold before you
muck them up on rocks...anyway, worth looking into.

-t