This is funny.. I just bought my first ski, and was pondering the same question: D3 Fusion, and with not much room, opted for the basement. Relatively dry, but cold because in Ohio I burn firewood upstairs. I decided to lay it across the top of the heat duct, laying between my joists. I put a thermometer down there just for good measure to make sure it wasn't too cold.. pretty consistent at 50 degrees.