These links might help:
The image below is proportionally correct for a 21.5" x 76" (6'4") board: 0.1125" = 1.0" or 34.75 mm = 1.0 ft. What dimensions do you want?
Swaylocks Surfboard Design Forum: thoughts & theories ... practical & theoretical
RAIL PROFILE http://bgboard.blogspot.com/2014/03/march-82014-afterr-seeing-recent.html
I repaired two surf tech and do a replica. Look at my previous post, you have all info you need. Bottom spoon front turning to vee. Dome deck with thin egg rounded rails. As I said Takayama rail shape style is a bit specific.
Slightly larger images showing fin position (37.55 mm = 1.0 ft, or 3.13 mm = 1.0 inch).
Save this image to your computer, print (actual size, no scaling), measure and give to your shaper.
[First images I uploaded in this post were incorrect. Current images are correct.]
Attached as a PDF are the previous images that included fin postion. Should be easier to download and print.
I criticize boards of this type primarily because they are not actually noseriders; but I admit that back around 2001 I shaped something pretty similar. I took a 10'0 template off an early Hansen Doyle model and shrunk it to seven ft. I set it up with a single fin and side bites. The guy that bought it raved about it. Wish Donald T was still with us. He was a great guy.
That which can be assorted without evidence was read in an illegal magazine.
Yeah but the difference is that a 7-0 length gives you enough rail line (and less curve) to give you some drive when you're not actively pumping the cluster.
You can see that's one refinement they added to the Scorp II, they widened the tail in order to straight the curve a bit more. Still not enough for the shorter lenghts, tho (IMO). But add a little more length and that changes everything.