The “panel” in the vee refers to the flat sides of the vee which taper down from the stringer, usually all the way to the edge of the rail, in a flat plane. When used in the entry rocker section of the board, the vee helps the board slice through chop much like the hull of a boat. Vee in the entry section also provides some directional stability when current may be in issue, and raises the nose rails slightly. This shortens the length of wetted rail at lower speeds, adds some entry rail rocker for tighter full rail turns, and helps prevent the nose rail from catching when coming around on a top turn. When used in the back third, the vee provides some directional stability and adds rail rocker. The longer and/or deeper the vee, the greater directional stability the board has, and the more rail rocker is added to the tail section of the board.