Another option to consider is to force the fight to a turn-fight or Co-E situation by baiting the enemy into a trap. This tends to work best with a slower aircraft that has good high speed handling (like a FM2, F4F4, F6F, etc). The enemy will expect you to turn-defense so you may be able to catch them in a trap.
Example:
Here's a classic, 10K Typhoon vs 8K F6F. If you let him BnZ you the chances are he'll eventually get you. He's dictating the fight AND the F6F is not a great E generator so you'll never get up to him. Change the fight and regain control. Start a shallow dive to build up some speed. He'll likely follow because he sees it as weakness and you are giving up your 6 position on him. Increase the angle of dive, building speed, you want to keep him on the hook so allow him some closure. This will make him think he will eventually get that nice 6 shot. What he doesn't realize is that it's a trap. By both of you diving you are both turning altitude into speed. Eventually you hit a drag limit where you max out on speed. If this is the case, then if you are at similar altitudes and similar speeds then you have similar energy situations. His extra altitude may have helped him initially to get closure but he just hits his drag wall sooner. If he's smart he may see the trap closing, if not he'll press on for the attack (depending on how well you set the bait). Avoid his attack, in this case utilize your vastly superior roll at high speed (he probably can't roll at all). 2 options exist then, he will either try and extend OR he will zoom up thinking he'll just re-initiate a BnZ. Well, the extension is an issue, you barrel roll to increase your path so that he passes you (a classic overshoot) and thus lock right onto his tail.. his speed is not vastly superior to yours so his advantage there is lost and you can take your shot. If he zooms, he may forget that you can also zoom and your kinetic energy situation (mass and speed) is very similar to his now, he wasted a lot of energy trying to maintain closure. You zoom up also, him thinking he's got you in a classic Rope-a-Done (as described by Drano) but in fact you have similar energy situations and can get up to him, either to pop him at the top or to level off at the top and face him in an advantageous turning situation (where your low speed turn is superior to his). He may dive away, or try, but then he probably doesn't have sufficient excess energy to escape before you put a couple of rounds into him.
This is a bit tough to master but can be highly effective. You really need to manage what is happening and keep the bait hooked but know exactly the instant the enemy changes his mind or is pulling the trigger. Any mistake in timing is bad news but done correctly the enemy might be thinking "Damn, how'd he do that!"
This is just an example though, you'll see some guys in the MA use it on occation, generally some very experienced ones.
