Ok.
Well, i don't know if you have ever tried this but if you look at a dot on the wall etc. for a extensive amount of time without moving your eyes AT ALL (I know this is very hard, but it is possible), you will see your vision fading to the point where your are blind, until you move your eyes.

In that stage, i can see "daydreams" extremely clear, and that is also how i almost induced a sleep paralysis (i know that normal sleep sensations are not SP, but i HAVE almost induced sleep paralysis on myself by doing this even though i have never experienced normal SP before.). I can clarify this if necessary.

My point is, maybe if you couple the "dot on the wall" technique with what you are describing it could be easier to do visualizations for a WILD. That is just a thought.