Well...lets see...my LBS hangs the new bikes by their saddle noses from the bar joists in the front show room. The shop I worked at we hung them from the rafters by the back wheels, I hang mine in my storage building by the frames (the ceiling is too low to hang them by the wheels). I also would make sure if you have one with a Sturmey Archer hub that you make sure the oil cap is up when hanging it to avoid an oil slick on the floor

Aaron