Doesn't the Isotope class allow 1 up or 2 up configurations without penalty? I thought it was designed to be a single hander, so why is it penalized under SCHRS? Don't they also permit sail plan changes as long as they conform to a specific sail area measurements?

I don't think two equally skilled sailors would even be close on an Isotope vs. an F16.... but those Isotopes do point incredibly high. They are pretty impressive on flat water, but still no match for an F16. We have both at my club and the F16 is always waiting for the rest of us to finish.