Here are the instructions for setting up the 7x16 and 6.6X18 and BowNet goals. The only difference between these setup instructions and those for the 4x16 (8U division) is that the poles are a single 4-foot pole instead of two pieces.
7x16 and 8x24 Setup

Here are the instructions for taking down the net. Note that this is for the 7x21. It is, however, close enough to the 4x16 and 6'6"x18 that you can use them. We have one correction based on experience. Using gravity doesn't work that well. Hold the rear leg out at a 45-degree angle and let it slide down as you are moving the fabric sleeve down toward the center. Otherwise, the fabric tends to get caught in between the outside and inside bars.
7x16 and 8x24 Take Down

After a little practice, it should take less than 5 minutes to setup or take down. We suggest having a couple of parents on each team learn how to do this so the coach can focus on preparing players and/or having a post-game talk.