OK, I'm sure we've all used some method to suck (or blow) a pull-string through a conduit run. I'd like to discuss that: what has worked best for you?
First, do you prefer to use a vacuum to pull the string towards you, or would you rather push it through the line?
If you use a vacuum, which one? Big or small? How have you modified it? What would be the 'ideal' vacuum to have on hand? (Or, should I ask, "two vacuums?")
How do you connect it to the conduit- especially when the pipe is behind a mud ring, off to the side?
Do you make it a practice to tape / caulk / or otherwise seal pipe connections in long runs?