I run a CCS (Cooke) lean shelter also....I add a "floor" with an additional tarp. While is not free standing it is a breeze to set up. It has been in use during heavy rains and we stayed dry....the sod cloth with an additional tarp (coated) has kept me and mine literally a float. The weight to space ratio is bar none. I am though thinking about adding some wing sides on both sides of the door. A big shelter...