In my experiences in the TL Wars, I actually find the BB clock to be pretty darn accurate. And I do play the role of TL Ninja, myself, it is really effective at frustrating the competition, and I'm pretty good at doing this because I find the clock to be reliable. Apparently, I'm the only one who thinks the clock is good.
Don't ask what sort of Chunks they are, you probably don't want to know. Blowing Chunks since Season 4!