My mast is #214 on the static load test chart. It's one of the heavier sticks at 15 kg...and it would appear to be on the stiff side of the average. Equal port/starboard bending.

Macca,

How does one derive the dynamic flex measurements? Is it subjective...go out and fit a sail and sail the boat? Do you then take that sail and put it on another mast and try to guesstimate the differences? How are diamond tension, spreader arm angles, hound positions accounted for?

Can the variations been tuned out to fit a given sail via adjustments to diamonds/arms/downhaul?