Although there are no icons, watch my "flight of the Violator" film. Every dot you see is a bad guy. You can see how they all start on my 6 and I manage to get 2 planes in the rolling scissors from my overshoot attempt. As the spit16 was coming around, I had another P47 zoom in for a shot, so I had to dodge him, which put the spit in a position I didn't want him to be in. They hit me a couple of times but I was able to get around and finish off both the spit and 109 almost simultaneously.
I have practiced this type of fighting for a long time. I am good defensive fighter because this is how I like to fight in the MA.
I think the problem is if you are using a keyboard right? Is that it is hard to look around all the people. This is dangerous because you never want to lose sight of them, especially in a multi con situation. I'm not positive how to set up a good viewing system on the keyboard. But that is a huge issue because timing your moves to where they are at is huge!!
I keep my "look up" button seperate from my hatswitch in the controller so I can look up and around at the same time. It is very helpful.
You do well in the single con overshoot cause I've seen it. But I think you bleed too much E going for a climb shot, which can work in a 1v1 but not so well vs multiple cons. It is a decision whether to go for the shot, or push the nose down and do a nose down turn to avoid the other opponent. It depends on how far away the guy coming around on your 6 is. Also I would do everything you can to avoid the HO as well and if you can pull a quick emmilman for an angle shot.
It all depends on the position your enemies are in.
A lot of the E guys here are not use to being in a defensive position with low E against faster planes approaching them, so while E fighting may not get you into that position, if you accidently do get in it, you won't have much of a chance because E fighting with faster (more than one con's) appoaching your 6 makes it difficult to reverse E them.
As ink and a few others have said. Making the shot is critical in the position. One missed opportunity and the guy who is E booming you will pluck you.
It is a tough position to be in but if you can keep getting them to miss and over shoot or follow you in the barrel roll then you have a great chance at killing them.