Glenn, less than 2. The time consuming part is putting stakes at each corner and taking the stakes out of the ground. Stands without stakes, but it can then blow away. We also use guy wires to trip over.
There is a Gazel(l) knock off brand out too. It is less expensive and is a light
tan color with a size between the 4 sided CLAM and the 6sided CLAM. They also have one the same size as 6 sided CLAM. Worth checking out for people doing the research.