Environmental test #2- pretty good winter storm- high winds again, about 30mph with 45 gusts, plus about 6-7" of wet heavy snow. No problems. The top has enough slope that it shed most of the snow. My temporary carport structure was near the breaking point from this snow load- tore out a few grommets and broke a number of bungees connecting the top tarp to the frame. The trailer seems more robust than the carport, and that has lived 3 years outside. Time to fabricate the rear trailer doors and put the plane away for the winter. I'm satisfied with its durability for now.