George,
Could you tell us what you think about flex in surfboards. How does it affect performance? How would full length-board flex (lateral) affect performance? How would performance be affected with tail flex only? Lateral vs. torsional tail flex, or both? How would you incorporate flex into a build?
You made this comment about flex awhile back. Could you elaborate/explain in a little more detail?
I recognize these these are broad and sweeping questions.
Thanks for your consideration.