Just had a show and tell with msscoutleader at our local city park. He got an opportunity to see a Grand Trunk Skeeter Beeter a Hennessy Expedition 2.5 and my gathered end DIY. We covered Whoopie slings, straps, under quilts, closed / open cell pads, tarps and DIY materials. Wasnít able to answer some of his questions on the materials. I would rather admit I donít know than steer someone in the wrong direction. That would causes you to loose your credibility. Hopefully he will post the questions here so that you pros can help him out. It did make me feel good that his son found my home made to be the most comfortable.