I tried this again last night. I was doing it exactly as written. I was on my back imagining the feeling of sinking into the bed. I got to some sleep paralysis pretty easily. Once I hit SP, I decided I wanted to play with the feeling of the vibrations, so I tried to hover in that vibrating state for as long as possible. Never did end up in a LD.

I find that I almost always get SP when I WILD on my back, and almost always get a time lapse or loss of consciousness when I WILD on my side. I guess its because I actually fall asleep on my side since it is my normal sleep position. Eiter way seems to be equally prone to enter a LD.

I also want to note that I got some crazy body distortions while in SP. I could feel my feet bending backwards at the arch in an impossible way. It was so painful I had to stop. I guess this is what broke my chance at an LD.