IMO how much have you spent on your Paramotor set-up and your looking at cheap fabric shelters, not sure which part of usa you live in but in the UK our climate is mainly cold wet & damp, thus why i prefer my complete set-up inside my brick building and if there a debate the Wife goes not my toys , engines electrics and possible damp conditions not a good mixture, So i'd say at minimum got to be wood but that's just my opinion.