My concerns would be:
1. Would I want the top, solid or mesh?
2. Square or rectangle? Would one have an advantage, one over the other? Say 4' x 6' rectangle, or a 6' x 6' square?
3. I like the idea of having a zippered opening at each end, so I can put them end to end in longer areas and walk right through.
4. Make the bottom of the screen, from the ground up, say about 12-18 inches solid, to deter some of the smaller critters.
5. At the bottom of the tent, have material to come out across the ground, to be buried. That way when critters try to dig at the bottom of the tent, they hit this piece, plus added stability. I know, it will have to be quite durable!
Posting on a few forums, hoping to get more input. Sorry if you are seeing it more than once.
Those are my thoughts, I would appreciate your input..TIA!

Google pulls up all sorts of images of full garden protection structures. Everything from low.high tunnels to simple PVC pipe arches covered with insect barrier or chicken wire to structures made from bird netting/plastic deer fencing to sturdy wood frameworks enclosed in screening, sunshade cloth, or fencing.

Just avoid the use of any plastic sheeting as the trapped heat, especially in your location, can quickly kill the plants.

Dave