> We cannot agree on what tests or their results mean.

I think we can all agree that the panel that is strongest in a given test will be strongest when subjected to similar forces. While these forces may not be exactly what a boat sees on the water, they will be comparable in relative terms. The only thing "wrong" with this type of testing is it is incomplete. So... more testing.

> By the way the cost of testing is high. I figure Somewhere between
> $50 and $200 (includes labor) for 6"x6" test panels to get
> "lab" results (using Nick's specifications). $1000 perhaps
> for a whole set of tests.

Cheap compared to wrecking a boat as has been proposed, but obviously not free.

Getting meaningful data is difficult. It is also far more boring than going out for a paddle, but the results are something that can be used.