I have a buddy thaT has built several of this type of shelter for her poultry business--(each breed gets its own tractor) And they DO support a lot of snow weight. In winter, she lines them up on the leeward side of a barn, (safety concerns for feeding and water). For summer use, she has poultry wire on the lower half, and rolls up the tarp for ventilation. (Silver out) Another neighbor raises broilers in some-- they are in a very open field, and do not appear to be affected by most of the winds we have here. They may be anchored, as they are not moved on a regular basis. That neighbor uses the cheap blue tarps. I am 5'7" and they are tall enough for me to stand comfortably inside. Still have to duck through the doors...