Sorta off subject. I can count on 3 fingers the times I used my shelter half. That includes 2 times in schools, once on an exercise.

Most shelters were my poncho and your poncho snapped together to make a tent. My trick was we slept parallel to the openings, and pulled out the hoods to give us more room. Rucks went down the center. If it rained, and it always did, an od space blanket (the heavier one) was placed over the end the rain was coming in from. It's not a big trick to make shelter like this, all US ponchos fit all others. I refused to sleep in the larger tents, too noisy, too many people. At one point I used a camo civilian dome tent. The bosses didn't care as it was camo.