I'm really glad someone finally responded, I find it a deeply fascinating subject, but it's so tricky though. I've felt like its driving me crazy lately. The thing about it is that it's so close but sometimes so far away at the same time. I will lay down for a nap and try to jump right in and get frustrated if I can't do it which makes me more committed and then causes me to get more frustrated, its a dark spiral. Also it screws up my sleep because of course every time I close my eyes I know this potential exists so then I can't just sleep normally.

So a couple of weird things have happened worth mentioning. Firstly I've been working on consciously manipulated my hypnogogia for forever but after I consciously thought about it I had a break through and suddenly I could make just about anything happen, I mean immediately after closing my eyes. Even the basic light spots and things, I can move them around, break them up and create whatever picture I want with them, I can basically do anything within a certain frame. It involves kind of working the potential of whatever your looking at. If I see a little blob and decide that I'm going to turn it into a picture of my friend it will work but at first it will only be basically like a stick figure, if I then focus on it maybe three or four times then it will transform into the 'real' thing, more detail in the right direction; if I can keep it up without letting the scene shift then it will pop out in full detail and that will generally start the whole thing going.
I've thought about this ability to manipulate what I see when I close my eyes and really it's not that strange right, it is my mind; but its a weird kind of control.
Another thing I noticed is that when the hypnogog tunnel comes up (or roller coaster or whatever) sometimes its just a picture that moves and sometimes the mind goes with the picture then you feel the plunge and the spinning and whatever else, and its way cooler. Well the thing that regulates balance is the inner ear (if I'm not mistaken) well you can focus on this thing and screw with it, so I can start spinning fairly easily; which makes for greater interactivity.
A technique that i've been using which works pretty well is to imagine a red dot (or any color dot) in the middle of the picture and focus on that above all else, don't be distracted by what's going on. If you can hold onto the dot then the scene will pick up on its own.
A final note I was trying the other day, and like I said in the first post the view frame is a three dimensional box right, and usually I am focusing deep into the box trying to get things going, but also on the front of the box which is usually too close (to the oracle of light, I don't know, the view spot) so I don't normally see it. But that time I noticed that there was a picture of myself pouring a cup of tea right at the front of the frame and I realized it because the cup was about to overflow, so then I stopped pouring and took a drink and it was mint tea, and I felt the cup and tasted the tea. It was pretty weird.

Sorry mine is fragmented too, it's a tough topic to organize.