[jeargefef]

It's possible that what you're perceiving are not pre-exit sensations (which is why rope and other things are not working) but return sensations prior to waking. From what I'm reading it sounds like you're clicking out and missing the exit and then 'coming' to, and what you're interpreting as exit sensations are reentry sensations.
I'm getting this from the description you gave: at some time I 'about lose consciousness' and get back to a conscious state, then I start to imagine something(this step seem to be important), like running from something or following something in a fast way.
When the images fade(the 'daydream' cease) I find myself with the vibrations. Then I will myself out of body, my body or legs start to float and than what I said happens :/ Sometimes return sensations are the same as exit sensations. Is there something you can change about your routine, such as the time you do it, to keep you from losing consciousness?