I have done it before. It is tough. You're supposed to cover all of the detail in the paragraph, get people to think, not make it boring and engage multiple people in the audience- not just the same 3 people. Oh- and you have to stay paced and on time- not rushing at the end.
Also- doing the WT really gives you a lesson in the "head fakes" in the articles. "This article is about how everything we should do should be for love of Jah"- then never mentions that again- turns out to be about how we have to work hard to get into the New System!
Very monotonous and draining if you do it week after week.