No tracers force you to THINK about your lead and setup. You are not worried about the trace and fixating on the bullet stream.
I think that in the accomplished pilot scenario it is a chapter that one should go throgh.
Once you figure out the angles and lead for the setup then tracers help you fine tune your angle at the last second. This is very different from using them to actually track a target.
Tracers are old news. By the time you can detect the lead of trace the target is way past this point. Trace only serves to refine or give one a visual clue as to the amount of lead or neg lead necessary.
Most times when I fire at a target that I maneuvered into a crossing shot, I am firing way ahead so that tracers dont even matter. They don't help me make the shot...only to show me HOW i missed.
I can say that no tracers really gives you an edge on dead six shots because the target never knows when you are firing. When tracers are on they can maneuver based on your tracers.
To
hit your target, you need to think about lead and set-up. Tracers doesn't effect that one way or the other. I'm not talking about "walking" them onto a target. I don't pay any attention to them when I shoot, but I still notice them peripherally. They tell me in an instant where I misjudged my aim. If I don't misjudge my aim, they matter not one bit.
Turning tracers off forces you to do one thing, and one thing only. They force you to guess. If you think real hard after a miss with no tracers, you're still guessing; you have no factual way to
know where those misses went.
Tracers only tell you what the error you made in aiming was. And that information is only valid if you
thought about/paid attention to lead and aim.
But, without that information, it's really tough to logically correct for it next time that situation pops up. Without the information tracers give you, what option do you have but to guess where your shots went, and guess how to correct for it. Considering how much space your target doesn't take up, that's actually leaving a lot up to guesswork.
Tracers= I aimed one plane length in front of that guy, and missed him behind and high. I can correct for that next time by...
No tracers= I aimed one plane length in front of that guy, and missed him. I have no idea where, but I think maybe I aimed too low. Or too high. Er, maybe I lead him too much? Well, maybe my lead was perfect, but I shot under him? Could I have possibly
shot over him? I don't see how... No, no way I shot
over him. No way in heck! Next time, I'll aim higher, and maybe lead the same, or a little more?
I've flown with them both ways. I see absolutely zero value in having them off, and tons of value in having them on. Speaking for myself, I've figured out how to shoot, so I really don't need them anymore. Tracers have little value for me
anymore. That doesn't mean they never did...
Of course, I'd still like to shoot better than I do (roughly 12% against fighters), so keeping them on will continue to give me much more factual information then just guessing would.