...in the workshop
in the meantime a couple of "modern" templates** pictures
I do not know about guys doing these type of templates, so I assume that is something in my way
there re kind of "dual" ones
you have 2 types of curves (outside, inside) to obtain the outline. You can for ex put a semigun outline (outside) and a shortboard inside.
Also these are cutted with a CNC router
(**)templates were and are made to draw the surfboards outlines. There re full templates, half (in this case and in most cases) and spin ones.
you have the stringer like reference