Knotty you are right about the diagonal bit. I was trying to find a way to get the most out of 54" in. wide noseeum and was having a hard time. Also i didnt want to waste alot of fabric cutting and resewing.
One thing i forgot to mention is that this requires a ridgeline. Also with this design you can add a zipper/velcro to the bottom or just seal up the bottom and add a zipper to the front of it.