[Eracer]

I picked "Yes".

I would have picked "Not very often, but yes I do know how to do it properly and sometimes use it, but only on a green that I think has a single break, and only on putts shorter than 20 feet but longer than 10 feet."

The biggest problem I have with plumb-bobbing is this:

1. The only reason to plumb-bob is because you can't feel how much break there is. Sometimes my eyes contradict what my feet are telling me.

2. In order to plumb-bob correctly you must stand with your shoulders parallel to the slope.

Which of course means that in order to plum-bob correctly, you must be able to feel the slope that you are plumb-bobbing to see.

So it's of marginal use.