Last winter I started planning the design of a porable ice house that allowed me to travel to any remote lake or river that I wanted and live comfortably. My design worked great but the freight sled didnt work well and I ended up having to use my otter for everything. The portable ice houses available didn't provide me what I wanted in an ice house. I wanted something to sleep in, was insulated, and broke down small enough to go anywhere. The floor system was tounge and groove, insulated (foil backed foam) and coated with truck bed liner. The underside was sealed with thompson's weather seal. The soft wall/roof system was made of an inner layer of heavy duty tarp, two layers of reflectix insulation, and another layer of heavy duty tarp. The eight hard outer wall pieces were framed of 2x2 (also insulated with foil back foam) with a 1'x1.5' window which provided a great panoramic view. The ice house broke down into the following dimensions: 2ftx2ftx8ft long. The erected dimensions were 8.5ft tallx8ft wide x 8ft long. The weight was 150lbs. The floor system had 6 built in holes with integrated covers that were also insulated. My snow machine had no problem hauling this thing through very remote trails. Get this.......3000 btu's kept this thing at room temprature in 20 below zero weather! It burned 1 pound of propane in 16 hours of continuous use! This ice house allows me to travel where ever i want, sleep as long as I like comfortably, and use exremely little fuel to heat becuase of all the insulation and tight fitting pieces (equiped with weather stripping). A mr. heater is too much heat. I had to get tiny little sport cat heater to keep the temp down. The overall cost was $2,700 to include the custom freight sled that didn't work well (needs WIDER runners). The Two pictures are one of my buddy putting it together, and the other of all the gear and ice house pieces packed up and ready to leave. I have a ton of awsome pictures of this thing erected which I will post if anyone seems interested with my design for which I plan to sell in the future.