I was asked to teach part of the Space Exploration Merit Badge to about 50 Scouts for a Spring Camporee. It sounded fun until I was told I would only have 3 hours to build 50 rockets, and then fly and recover each and every one of them __twice__ (!!). Oh, and the only field I'd have access to is about 150 feet x 75 feet. Using only these kits and a few tubes of plastic cement to be shared among the crowd, along with 3 other adults and 9 launch pads, we actually finished the job with 20 minutes to spare!! For the completely-uninitiated, it will take about 15 minutes in a group setting (pacing with the lowest common denominator) to put the kit together. For those kids that are mechanically adept, good with their hands and can follow instructions, you can trim that to 6-8 minutes. The kits snap together and glue in 2 places. The hardest part is getting the fins to stay in while you glue the two halves of the body together -- having a second set of hands helps. On 1/2A3 motors, these go about 250 feet, which means that on a calm day you don't need much more than a small field for launch/recovery. Streamer recovery means they aren't going to drift much. One thing I'll mention is that the inner motor mount tube (MMT) extends the length of the outer plastic body tube shell. The streamer gets rolled and packed into the 1/2A-sized MMT, and the nose cone is configured to fit into the same MMT (so that the motor ejection pressure pushes it off. If you're not careful in tightly winding/rolling the streamer and packing it carefully, you'll damage the top end of the MMT, and it'll be tough to get the nose cone to stay on. We had a few issues with that, as well as (due to same damage) a few nose cones that didn't eject, resulting in a few lawn darts. I counted those as recovery too. :)

One of our favorite rockets to use in our workshop especially for kids with dexterity issues and impaired fine motor skills.