Youll need a volumous source of propane. 100 dollars a week is probably going to be the norm in WI in winter. You really need to figure out how yo seal the open underside of your MH. Hay bails would be ideal but then you would have varment problems. So a framework covered with foam insulation board and something over that certainally would work. Since you want to be off grid a heat lamp is our of the question. But you really also need a heat source under the MH. This will help prevent pipes from freezing
