A method for RC's that I've been playing with
I don't have much time to research this to see if it's been discussed and probably will not be able to reply or participate in the discussion, if any: Mods please feel free to delete if this has been beat to death.
The idea is that since the topics for a lot of our dreams are pulled from what has been occupying our minds that day, we can preemptively identify our dream signs for the night as the day develops. I have been doing this for the past few months and have many many lucid dreams as a result. Say you notice you are thinking about some topic a lot on a given day (hottie, project, exam, etc.). Start RCing (A real one mind you. don't just go through the motions) whenever you notice that you are thinking about that topic. See if it doesn't carry over into the night. I've noticed that it works (for me of course) about one in three times.
Give it a shot. See if it works for you.