Experimenting beforehand is always good. I wish I could post some conclusions he didn't . Does anyone notice anything usefull in his photos? Maybe all that leaf litter could be piled up into a groundlayer of insulation, space blanket laid on top, additional leaf litter and finally the orange ponchos for visibility and increased weatherproofing. An emergency shelter by nature isn't going to be as durable as a notched and chinked log cabin. I don't see many log cabins moving and perhaps our shelter shouldn't either. This brings us to the rule of staying put when you realise theres a glich in your itinery.