positoning of template on blank

Hello. Has anyone got any feedback about the positioning of the template on a blank. That is, if I use a 7’3" blank with say 6" of nose lift and 2 5/8" tail lift and want to keep the nose kick but flatten the tail to make a 7 footer, how would it effect performance by moving the outline further forward and taking the 3" out of the tail. Thanks a lot. Cory

not to familiar with that blank but a rule of thumb is the farther toward the nose your template is the more rocker you will have in the nose and less in the tail, conversely it woks the other way for the tail. Move your template toward the tail and you will have more tail rocker with a flatter nose! So from whatt you have posted it sounds like you ahve the right idea Drew

Drew, Thanks for the input, but the question is, if you move the blank forward, how does the intervening effect on the curve effect performance. That is, the base or the lowest point of the rocker curve is generally centrally located on the balnk. By pushing the template forward for instance, this also has the effect of pushing the lowest point of the curve back. Does this effect performance in any way? Thanks again.

Yes you are correct when positioning the template closer to the nose you reduce tail rocker. What this does performance wise varies depending on how you shape the rest of the board, but a flatter tail is generally faster, especially down the line type speed, will be a tad sloer on the turns, and will catch waves a little quicker than a board with more tail rocker. Look at an old 70’s single fin or even a older fish shape. These boards had literally no tail rocker. And they were FAST, FAST boards. Mind you, there are subteltieds involved that can alter a flatter tail rocker, you caould add vee to ffset the flatness, or take the outline of the tail to a round pin as opposed to squaredoff tail. Hope this helps