All the technologies you describe was developed in the space programs. For new technologies we need to look at what NASA and ESA are doing (I disregard India and China, as I believe they are playing catchup). Problem is that they have not developed significantly new technologies either, so the civilian market dont have anybody to pick up new tech from.

Now, do we need new technology for beachcat hulls? Isn't the current top technology producing 'light enough' boats? If we could build 18foot hulls weighting 5kgs each, would that be an advantage? I think there is a crossing point somewhere, but where?