After researching... I ended up with a "snow load" rated King Canopy 20 x 10 x 8 shelter. Curved roof. I put it up by myself in 3 hours. Purchased at Home Depot. The guy who helped me put it in my van said he bought the same one 3 years ago and has had no problems. That made me feel good! I plan to keep the snow shoveled away from the sides. The side walls have extra material on the bottom and the instructions recommend burying the flaps to keep water out. Also, it came with 6 earth anchors! Really impressed with the overall quality and all of the hardware provided in the kit. It was just a tick over $500. It's large enough for the camper with 3 feet in the front and 3 feet on the sides to store additional items. I'll throw the kayaks, bikes, lawnmower in there just to clear out the garage for the winter. I posted the finished pic first, then some build pics below. I used electricians tape to hold the tubes together so they wouldn't fall apart while I added more tubes. No bolts! It all slides together. Pretty smart design.