The Progressive Modern Hull is an updated, user-friendly modification of the traditional, California-focused displacement hull. The PMH retains the bottom shape of a classic hull: convex on the front 2 thirds and flat on the rear third, with a tucked under edge on rail from the fins to the tail. Tristan rebalanced the outline to move the pivot point to the rear foot, with a wide point centered in the middle of the board, unlike the wide point forward shape on a classic hull. Tristan also reduced nose width and moved the fins back, creating a more back foot-responsive design for progressive surfing in a wider variety of waves.
The Vee-Bottom is an ancestor of the displacement hull, a design perfected by Bob McTavish and then left behind by the shortboard revolution. The vee is a planing surface divided in two at the tail, providing displacement similar to a convex bottom as well as the lift-generating benefits of a planing bottom. The vee also aids in the board's passage from rail to rail and sensitive board control without having to step back to the fin. Tristan's is a more extreme version of Vee-Bottom, accentuating the difference between the nose and the tail and removing the outline of the parallel rails, allowing the surfer greater ease in disengaging the rails from the face of the wave during turns. The result is a board that offers responsive direction changes, control without breaking trim, and quick recovery out of turns. As Tristan writes: "The style of surfing is then akin to a steep path, full of turns and radical u-turns, versatile speeding like advancing on a ball and playing this ball, encountering the slightest of imbalances and surprises. Surfing a Vee-bottom is like playing with the wave, circling the curl, staying there, escaping it and returning to it for a better start."
The Antistatic Hull is designed to tackle powerful, barreling waves, with a pronounced pintail, wide point forward, a fast outline and stretched curves. The pintail reduces the volume area on the rear third, allowing the tail to sink into the wave and retain more control at high speeds. The pointy nose, with less surface area, reduces catch on late take offs. The rails are slightly lower and boxier than on a classic hull.