Whats always fun is the attics with blown in insulation, its like there is 6 inches of snow up there, makes finding the joists a lot of fun... only fell thru the attic once, I ended up inside an empty closet with no knob on the inside and to top it off I got clocked with my mag lite once I hit the floor. But I will still take an attic over a nasty dank crawl space anyday... My father did residential alarm installs for about 15 years and he said that he can't remember how many tools he left in a crawlspace that it just wasn't worth it to slither back thru to retrieve them.