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Hi, This is the first time our team is participating in nationals. We are very excited about it. have couple of questions and would really appreciate your replies. 1. How is everyone transporting your rollercoasters to Nationals? Flight Check-in or shipping through carriers. Any recommendations? 2. ...

Hi everyone, This is my first time coaching bottle rockets. What materials are used as backslider? Can someone please share details. I checked homedepot and they seem to be very heavy. I see some plastic tubes being sold on amazon. I am not sure if they would work. Also, since the bottle size is 1L ...