The first method seems like it would work well to fall asleep, in general. I do something similar every time I go to sleep. I begin by lying on my back, an uncomfortable position that is not my normal sleeping position. I then roll onto my side (my normal sleeping position) to fall asleep. I do this same routine in my WILDs. I start on my back, run through some relaxation and dreaming meditations, then roll onto my side to make it easy to transition to the dream.

The second method sounds bogus. I've never bought into the "trick your body" kind of WILDs. They just plain don't work and don't make sense logically.