According to udarrell :
Turtle, -- where they really need shade is on flat tarred roofs. The heat
would burn through your shoes and you had to stand on insulation material,
yet I never saw any that were shaded.

They're called _trees_. You have them down there, don't you?

The tree cover around our house makes a huge difference to A/C
requirements.
--
Chris Lewis, Una confibula non set est
It's not just anyone who gets a Starship Cruiser class named after them.