Step 2: Make the hoop
The first step is to make the hoop. I used my arms to predict a diameter that would be comfortable, but not too hard to manage in the car. As it was, I made it a little too roomy at ~48" diameter, and it was a bit too large for the shower curtains to meet as well. Next time I would cut it down a bit, maybe to 40". You choose what is comfortable for you.
Insert the connector completely in one end, but leave the other end disconnected. Pushing it in only two notches didn't affect its functionality on the campsite, but it made it easier to disconnect the one side when I was leaving. Leaving one side disconnected allows you to fold it over on itself and fit it in the car, and it also allows you to place it around a tree (next step).