In the past when I was working for my dads company, he did alot of residential rewires, I would install a phenolic or porcelan keyless lampholder first thing in an attic after installing the new service. Otherwise, I like to use a flourescent drop light, only problem is the handle where the ballast is located can get rather hot but not as hot as an incandescent. Had a bad experience once with incand. drop light in an attic when a helper left it laying in some blown in cellulose, it heated the plastic shroud and had a small spot of the cellulose smoldering. No more incand. for me and my helper got a talking to.
