I built my first backyard rink this winter in Sussex County NJ. An elevation of 1200'+ enables me to keep ice a bit longer. I went with a straightforward approach this year, 1' plywood strips, paving stones for support and a roofing tarp. My rink's dimensions are 20'x55' which is perfect for my 6yo and his buddies. Opening day was New Years Day. I have rigged up some stadium lighting to allow us to play in the evenings after work/school.