I'm familiar with aerospace radomes for antennas. They use a bias twill ply layup, but they alternate the layup so the bias is reversed on each layer. Good point about unidirectional fibers for longitudinal flex, but they don't provide as much torsional rigidity bias ply- I think

Does anyone have experience using visco elastic tape the full width of the ski as a vibration dampener on the front and tail sections?

Does anyone have a MatLab dynamic ski model? The aerospace industry does most of the analysis with that tool. It would sure be cool to be able to fly a few designs before the build.

Does anyone have experience with carbon fiber prepreg material? I'm a newbe, so I was wondering what thickness and how many layers might be required. Also twill vs straight fabic. I'm thinking or two reverse layers of twill.

Have you considered bambo flooring material? Just a thought.