So we sat around drawing up a simple trailer ( a "could be" standy ) that would be simple to build but offer the structural and aerodynamic benefits of the rounded top without all the work … Plans are pretty much self explanatory , and yes there is a wooden framework that helps those who aren’t quite sure of the strength of Foam yet … and a good place to hang all kinds of things on … ( your built in “hard points” )
Make it the height and width you want/need !!! Put doors and windows where it suits you ... Just an idea to sit around and ponder in front the fire with your favorite beverage ...…