Release
The effect that allows water flow to be accelerated as it passes along a surfboard's surfaces. Causes of release are usually available in the second (tail) half of the board, through tail rocker, outline curves and trailing fin edges, and through bottom features which open up opportunities for water to move, such as concaves and channels. Controlled release (along with its opposite, drag) is essential to successful surfboard design.
Reverse Vee
A bottom shape dating back to 1991, credited to Maurice Cole of Australia, in which vee is placed in the front half of the board, flattening out through the tail, accompanied by considerable tail rocker. This design idea completely reversed the traditional image of the surfboard, thus the name "reverse vee". Reverse vee, also known as "revee" or forward vee, is in common use, particularly in large-wave boards.