Les planches de freestyle ont un nose plus long et plus large, pour pas s'enfoncer dans la "peuf".

--------------------------------------------------
Note added at 8 mins (2012-02-16 17:46:37 GMT)
--------------------------------------------------

Pardon freeride et non pas freestyle bien sur!

"but taper—defined as the difference in width between the tip and tail of the board—makes all the more difference when it comes to float and turn-ability. The more taper, the wider the difference between the tip and tail widths, and the better it will slash and turn on deep days.
http://www.the-house.com/portal/snowboard-taper-a-tool-for-t...

--------------------------------------------------
Note added at 24 mins (2012-02-16 18:02:10 GMT)
--------------------------------------------------

il faut noter que l'incurcation concerne le "side cut". le "taper" est la différence de largeur entre l'avant et l'arrière de la planche.

"And how does sidecut affect a board’s ride?

Sidecut sounds important, but it’s one of those terms that’s thrown around frequently in the snowboard world and not that well understood. Maybe that’s because it involves math and geometry—not a favorite subject for most. Simply put, sidecut is the arcing, hourglass-like curve that runs along your edge from tip to tail. How deep that curve is defines how your board turns.

If you think of the sidecut as an arc, imagine that this arc is part of a larger circle. The deeper the sidecut, the smaller the circle (and the radius). The deeper the sidecut, the sharper the board will turn. Many freestyle riders prefer a deeper sidecut.

On the other hand, a longer radius (shallower sidecut) will turn wider and is optimal for providing stability at speed and making long, arcing turns while still holding an edge."
http://www.the-house.com/portal/what-is-snowboard-sidecut/