"When flying dual-deployment rockets, how long do you make the shock cords? And which one (long or short) is put in the back of the rocket?" These are common questions that we get from people that are building dual-deployment rocket kits like the Torrent or the Level-2. The printed instructions in some of the kits from other manufacturers are not all that clear in this regard. In this video, you'll see which shock cord goes where in the rocket, and more importantly, the reason why it works. When you know the answers to these questions, you'll be more confident that your rocket is set up properly for your dual-deployment flight.