I would suggest that you try your WILD's a bit (or a lot) further into your sleep cycle. It seems that you're bumping into a bit of NREM in your WILD attempts, so it might be better to do them later on, when REM periods are very close together. By the same token, I would suggest that you sleep longer, if you aren't doing that already... but still do your WILD as far into your sleep cycle as possible (at least 5 hrs is best), so you can have your lucidity after the repairs from your physical activity have been made.

But then again, there's nothing wrong with a exploring a little NREM...