Zero Slot Channel
Zero Slot Channel bottom contour is based on the theory of a "planing hull" which as the name suggests, gets you planing earlier and easier, giving exceptional down the line speed off the weakest of sections.
It features a large single hull concave that runs through the middle of the board.
A lot of the inspiration came from the Bob Simmons designed Mini Simmons surfboards, which have since evolved and are evident in a lot of the modern day Daniel Thompson (Tomo Shapes) and Slater Designs surfboards.
As you lose the hold provided with regular channels, this is most commonly combined with the Vax Trax Rails for a bit of extra hold.