Condor,
You may not believe this but how you fly your own plane allows you to dictate what you see and don't see.
The Axiom, "Lose sight, lose the fight" is very true. View may be only one part of the whole fighter pilot experience but they ae very important.
IMHO, the only time you should lose sight of the guy is if you specifically roll belly on as a part of a tactical maneuver or if you're not paying attention to your 6 and some gomer sneaks up behind you from under your belly. Don't get me wrong. It's gonna happen that you're not paying attention. However, if you lose sight on a guy that you are actively engaged with then keep working on it. You will get there. As a part of not losing sight you will see every single mistake the guy makes and most times will be able to capitolize on it. You will also be able to recognize immediately if your fight is going badly and maneuver to exit it for a reset or bug out. By the way, who ever said you have to stay in a fight that happens to be going badly?

I spend a huge amount of time with folks in the TA to help them get their views setup. Then I take it a step further by taking them up with me as an observer. This is to take the stick out of their hands and let them just sit back and use their views. You have to learn to walk before you can run. If you've been up with me you will hear me calling the views as we engage folks and make the turns. At first, you may find it very hard to switch views at some of the speeds the views are changing. The more you do it the easier it gets. Note: you need to be able to watch some guy scream by you in a nose on and continuosly watch him as he blows through and turns, loops, keeps on going, whatever. Anyone who has been in training with me always hears me asking questions like; "why are you rolling off the turn, did you stall?" or in the scissors; "roll, roll, come on, roll it! Get your lift vector ahead of my turn, now pull lead in on me!" If you're hearing that you can rest assured I'm watching your every single move and trying to get you to use your views as you make the turns with me. The more you can see what's happening the more you will control the fight.
I'm going to be out this weekend for an anniversary (going over to Vegas) but anytime you want to spend some more time with me, or anyone for that matter, please feel free to email me or just grab me in the TA. Everyone else does and that's why all the Trainers are there.
As far as TrackIR. TrackIr's are great for some. I had one and sold it. IMHO I felt I had to move too much for the look around the headrest, rear views but that might be old age setting in. I will probably get another one when technology catches up at a reasonable price. Like everything that makes a good system work it just hasn't arrived yet. Take your computer and this game. Yes, it play's fine with some lower end computers but it gets much enhanced with a fast cpu, fast ram, lotsa ram, a fast video card, a big monitor that has a fast refresh rate. All of these things come together to make a great gaming system. It's the same for TrackIR.
About 8-10 yeas ago Sony and some other Company's came out with video headsets. Wow! Kinda slow but there was actually a couple of 2 inch screens a half inch from your eye. Very cool. However, there was no TrackIr then. Because that technology was petty much ahead of its time it kinda fell by the wayside except for some Gov't contracts and some of those arcade 3D games. The ones on the market begin at $1K or so and go way up from therre. If and when they come out with another "good" video headset so you can use TrackIr with it, then I'll be the first one to buy it all again. Imagine putting on your goggles and having head movement not "locked" into merely staring at a stationary (think about it. you only get so much head movement) monitor in front of you. Move your head 50 degrees right and thats where your views go to. Twist around some more and your view continues to move more. Marry the two and WOW!
So you can lose view and lose advantage or continue to practice and not lose views. It's actually that simple. I have my own old saying...."There is no substitute for stick time. The more you get the more comfortable with the plane you get. There is no substitute for quality stick time. Learn it right the first time and put what you learn to good use".
Lastly, just about every single Axiom you've read about is true and there's quite a few of them. It has been proven through the blood, sweat and tears of past pilots. "Speed is Life". There is a reason they said it. Just what does speed give you? Ask a trainer. They're there to help you.
Hope this helps.