After using http://stackoverflow.com/review-beta/low-quality-posts/ for a little bit, I've noticed a trend that when someone doesn't know the answer they take a wild stab and post it as the answer. What action should I take in the tool for this behavior? I'm doing Not Sure for now, since obviously I'm not sure what to do.
As said, it would be cool to see some examples but in general, an answer being a "Stab in the dark" alone shouldn't warrant any review action. The way to deal with incorrect answers is downvoting, not deleting.
After all, "stab in the dark" is a subjective category, and we don't know for certain how the answer came about. Maybe it was just worded by a very knowledgeable user with poor writing abilities.
So if you want to vote to delete, look whether the answer has other, legitimate problems - for example, whether it consists of a link only, or should be a comment.
If those criteria don't apply, downvote if you feel it's a blatantly incorrect answer; otherwise, move on.
If the "stab in the dark" explains how to try the suggested solution, it is an answer.
If it only asks "have you tried [this]" or "Try [this]", where [this] is a topic, not a solution, it is a comment.
There are grey areas though, of course, especially depending upon how the question asks for solutions.