I think the cowboys have the hill situation pretty sussed out i.e. behind the goals, a cheap alternative for people who want to congregate and an 'over-flow' area for big games when the stands are packed. Hills are great but should not take up the primo-real estate on the sides of a gound, and should not make up such a big percentage of the crowd (in case of rain etc). Still trying to work out why Parramatta removed their hills behind the posts only to reduce their capacity.