I performed a WILD attempt an hour ago, and it lasted around ten minutes. I might have got to SP, but I'm not sure. It felt like heavy padding was on me after a while, and very mild hypnagogic imagery (Just a very faint swirling shape is what I saw). After that, out of impatience, I got up. If I remember correctly, I just let my mind wander. The big question is: how long does it take to get to a lucid dream?