Having purchased 4 ShelterLogic products (including two of these shelters) for our small farm in the past three years, i am a big fan of SL products. This said, a small design change to this product would take its utility to a whole new level of utility. Moving the shelter from one pasture or paddock to the next can not readily be done by one person given the current design, at least not without weakening the framing. By adding lightweight "walker" wheels to one end, one peerson can easily move the shelter easily anywhere. See video. Had tried to send suggested adaptation along with one slight change needed in framing to your engineers but was advised that your engineers do not take calls. Would still love to assist in what is a simple but invaluable adaptation of a great product.