I'm missing some details regarding how the previous platform stiffness measurements were achieved. Can you explain in detail how the test was performed? With regards to level ground, if you are lifting one hull until the other comes off the ground, level ground is certainly important if that is what they were using to take the measurement between the hulls. Secondly, as I have no idea of the background or aptitude of the persons performing the test you are asking me to assume that they performed the test in a fair and knowledgable manner (and I could have my white lab coat and pocket protector taken away for such an assumption).

As it sounds thus far, there are some details of how the existing data was achieved that makes acquiring comparable data during Tradwinds difficult...but I'll try to get measurements on some identical boats so we can see how it compares.

The water level is a great idea! What I propose is; upon relatively level ground (Gilbert's concrete slab where the warehouse used to be will be great if we can find a spot without a boat or trailer on it!) locate a pair of cattrax under the sterns centered at a predetermined small distance. We then manually lift and support one bow to achieve roughly the level waterline of the boat. Using a poor-man's waterlevel, measure the elevation distance between a similar feature on each bow. We can easily take a measurement with the other bow supported and average the results to eliminate any twist already present. Am I missing anything?