what blank to use?

I am looking to build a 6’5" fish with a single fin such as rob machado’s made by channel islands. The image is shown in the link below. Can anyone tell me what sort of blank to use and what type of contours to use on the bottom (i.e. concave, vee, etc) Thanks -Ben http://www.surfermag.com/designforum/singlefin.jpg

6’11 R. cut off almost all extra length from the nose. perfect thickness, foil and rocker with minimal effort.