We've added a concave deck to increase rail volume and paddling stability on this short flyer. The idea is to pop onto the wave in a cork-like fashion and the Flight is high volume and ready for take-off. The short 5'5" length of the Flight enables you to get some pump-action going, so those with some heart muscle and big lungs can do multiple loops of wave riding and returns to the peak, repeat, without stopping for chit-chat.
Another obvious feature is the tunnel through the bottom which creates the correct trim angle for the foil mast attachment plate. It also adds a bit of directional stability when paddling and in between hops.
EPS with stringer
2 x 6oz plus extra 4oz patch deck
2 x 4oz bottom with Divinycell/carbon reinforcement