Maybe I have lost track of the right forums, but this thread reminds me of my early years on the bent (2000-2005) when there were numerous posts
by DIY makers of windshields and the use of coroplast for making head/tail cones and total bike covers for bents. Some enthusiasts made homebrew
heated molds for taking acrylic sheets and forming them into front windscreens 4-5' long and 18" wide before being complexly curved... Coroplast was much
easier to deal with and more commonly used. On a memorial bike ride recently I did see a tricked out Surly LHT with beautiful wooden fenders made
of glued up veneer with a form.