Though I think the majority of students are going to be responsible, there's a few who're going to abuse it.
You don't have to have 100 percent coverage, but you can't have a substantial loss in coverage. That is subject to interpretation.
Towers oxidize quickly and go from a shiny metallic color to dull gray. It's hard to see the towers, and I bet no one can tell you how many towers there are between Exits 1 and 5. It looks bad to have a painted tower with fake tree limbs and it's much taller than the trees around it. I call that the 'Wal-Mart Special.