You can try and play with the HH, as well as vibrations. I'm not sure it's neccessery to do for purpose of entering lucid dream, though. For that, perhaps best thing to do is observe them passively. But if you are an experienced LDer and you feel like playing and exploring, then why not?

I have also heard that you can learn to intensify vibrations, make them spread, and even direct them to different parts of your body. I have tried it a few times, each time without success. But then one day, I was able to make them much stronger and move them as energy ball. I felt these vibrations and energy rolling in my legs and I was able to make them stronger in left knee, then in right knee. While I was doing this, I either saw, or imagined blue energy field around me with lighning like energy discharges. It was exhilarating.

Maybe you could check out sivason's dream yoga class. He has a lesson in there with directing energy through your body. Dream Yoga

I realized the difference between when I wasn't able to do this and when I was. Every time I tried unsuccesfully, I was still too awake.

I used to frequently enter LD, when during WILDing I suddenly realized I can see my room. I wouldn't really call it false awakening, and it didn't feel like it either. To me, false awakening means that it starts as a regular dream in which I realize I'm dreaming. But this was, as you say, without loss of consciousness. Those were pretty hard to catch, because there is no indication that you are in a dream already, since I didn't realize that my eyes are closed, yet I see my room. For this I used mantra "when i see my room, I get up". This helped me to remember.