I'm having trouble shaking a bandit on my 6 no matter who it is.
The only thing outside of training that is going to help this is flying low and into greater odds. When you get tired of it then go do some BnZ or something else.
For Shaking guys you need to use alot of power management, you need to be able to read you opponents "Thrust Vector" and their "Shot Vector". Once you can see these things, while looking behind you, only then do you know how hard to pull to stay out of his bullets.
Thrust Vector = the lline the plane is flying due to inertia, control and power elements. (Some I'm sure will have a better definition. I hope. )
Shot Vector - as you know bullets can not turn corners, so if you look at where their nose is pointing you can read where their bullets are going to go in relation to you.
Combine this with adjusting power and knowledge of the plane on your six and you can start to develope ways to shake people.
Flying the spit, hurri or FM2 are the best ways to have early success at this, buit you have to allow your enemy to get on your six. This is called baiting.
Once you have an enemy zooming down on you... When they are 1.5 out start a gradual left or right turn, then when they are 1.0 increase the turn pull hard enough that you are not on their "Thrust Vector" and you are out of the "Shot Vector", but not so hard that you end up perpendicular to their flight path. What you want to have happen is, they go flying by missing you by a few feet so that you can roll in behind them and get off a shot.
When you see the point that they are going to pass you, (usually when their canopy is about at your tail, roll back in on them. This is where the power adjustments are critical. If you notice they are slowing, you need to come off the power fast. If they are speeding by and going to overshoot keep the coal on so they dont go by so fast that you cant get a shot.
What you learn in doing the above will help you create tactics of your own to shake other people.
Search for posts from wildthing on reversals or anyone else. Learn to scisors effectively and what planes you can use it against.
Again save BnZ tactics for when you have had enough low and slow and dogeing other dropping in on you.
Go to the TA and ask people to show you what a reversal looks like.
Join other pilots planes to watch them in action. Most usually they will accept your request. If you do, thank the pilot when it's over.