This is the board we came up with for Arron Hadlow. Because it is so small it switches around like a twin tip, while still having the drive wave ridding abillity of a Trow directional.
Rails
Double edge surf rails, a design which provides a release edge when the board is flat, and a chop cutting edge when edging. The 45 degree bevel between each edge gives the rail suction in turns.
Bottom
Single concave, which is shaped in from rail to rail. This helps to initiate edging easier and with more power. We fade the concave out in the tips to give the board more pop.