My inexpert opinion is that successful OB projectors are people that (like me) are light sleepers and are prone to sleep paralysis. I believe that people that are deep sleepers have more trouble staying at the 'body asleep/mind awake' long enough to be able to be conscious of any separation that may be happening. But people who half/wake with any stimulus (like me) and are prone to sleep paralysis (which technically is a body asleep mind awake state, only naturally induced by the brain,[I suppose]) tend to be 'awake' for the event, and then can remember and report it, giving it enough familiarity to be able to repeat it. But that's just my unproven theory.
You just explained me exactly. Ive been spiritual since birth, I was born with some knowledge of my rebirth, but its only been a few months since my reality shattering epitome. I think it was due to the astral. I keep having this urge to spill everything I know (I was told to even). But this isnt the place. Anyways, on the subject of AP.. First of all I guess you could call me a light sleeper, as in I know everything that is going on while I sleep. Even with my eyes closed I know. At boarding school my friends decided to wake me up by dumping water on my head while I was asleep. As the water was in the air I dodged it with my eyes closed, I didnt get a drop on me (and they kinda freaked)

. Another time I was sleeping and a friend sneaked up to my window silently and looked in at me for some reason, I snapped my eyes open directly at his, he pretty much died of fright

. Oftentimes I go to sleep thinking of something and come aware again in the middle of a sentence.
I've had quite a few experiences with sleep paralysis, it was a horrifying experience for me before my epitome. Infact the last time I had It I had an OBE where I embodied the form of a black spectre, flew across the house, and tried to knock down my own door attempting to scare myself to death lol. The door definitely rattled, but it was possibly something else. Its very funny now but it was the most terrifying thing that ever happened to me by a hundred fold then (maneating Grizzlies dont come close).
Other than that my most intense OBE/AP was when I was (of course) laying in bed. I was pondering something while mostly asleep when I (not very seriously) thought 'I know enough.' I willed my spirit to levitate (something I sometimes do just for exercise) normally it doesnt do much but this time I could distinctly feel myself leaving my body. I was somewhere between my body and 4 feet above it when I freaked out. I thought I was dieing. I thought god was teaching me a lesson in arrogance and was bringing me in, I said(in my mind) 'I didnt mean it, please dont take me, I have alot to learn' and I snapped back to my body. Im still a little afraid to use the levitation technique because I havent seen anyone say theyve tried it. Ive heard of people taking thier ethereal bodies with thier astral before, but that sounds very dangerous. Im not afraid to die but I still have alot to discover and I dont want to start over again.
Also, this might blow you guys away but I found you dont have to be quasi asleep to leave your body partially. Along with the levitation exercise I also try to move out of my hand, you know when you do it because you cant feel your physical hand. I came about that idea because once I accidentally 'moved out' of my hand, both me and my friend saw it, I was embarrassed and he just stood there paralyzed with his mouth open unable to say anything. Not every day you see your friend with an extra forearm I guess

Dont expect other people be able to see it regularly thought, that particular time took a huge amount of energy, I felt like I had been electrocuted. But anyways the point of my post was going to be if you think Im a candidate for AP with my seemingly light sleep pattern, being that AP takes place in deep sleep.