Over at the Sierra Designs blog I just published a design history of the High Route Tent 1FL. From my initial primitive sketch, it took four major prototypes to get it right.
If you are interested in shelter design or want to better understand how the High Route Tent came to be, have a read.
My primitive sketch of Generation 1.0. With this as a guide, Casey and I strung it up (literally, using string) in the office, before requesting the first prototype from our Asian partner factory.