I have been doing some research on creating a plastic hull. Everyone in the community i talk to says its not possible. When i talk to engineers and composite specialists they say it is possible.. So what i am looking for is if anyone here who may have some more detail on this. I know the Spark has been made from plastic and i believe with a little more density and the correct contour you could make a B/A stand-up that is relatively light. Also, if you believe it is possible what form of molding do you think would be most effective and efficient? I have looked into commercial 3d printing and i have gotten quotes between $200,000 to $300,000 for 1 hull. All other method like rotational molding and injection molding are hard to quote because i don't have a good idea of what a plug would cost. I hope that there is a more cost effective way of doing this.. Any information and any thoughts are appreciated.