We bought, just the canopy, second hand and really enjoy it. The poles on the inside hold it up away from the door, and water does not pool. It takes us about 10 min max. The more you use it the faster you will get. Some of the poles are shock corded as well.
I opened up the seam that was supposed to clamp onto the trailer and put in cording so that it pulls into our
awning track.
Since then, we have purchased four panels from Walmart and I have adapted them to fit on the
awning to create our own add a room.