Replying to Terrain Park Dimensions

I work for an insurance company and need to compile some data for various terrain parks. I am trying to get an idea of the general dimensions of the runouts/trannys for the landing zones of booters in the park. My guess initially is probably a width of 80ft and a length of 140-150ft (this is from glancing at Beaver Creek's line). It would be helpful to get an idea from you folks as to how big the area is (as in the downslope).