Precisely my issue with Spits. I can deal with them if I have a club to use on them. I actually often do better if I'm starting from a LOWER E state than the spit than if I'm co-E.
That's why I'm interested in what one does with a co-E one.
Wiley.
It may sound too obvious, and maybe even snide... But...
Don't leave it co-E. If you do better with more or less E than him, change your E.
Personally, I'm almost always going to do my best to retain (or create) and E-advantage over a spit, right up until the time I need to dump a little for a sure kill-shot. Like Rat, I'm a hog flyer, and although I'm comfortable having less E than a spit, I always try to keep or build my E, figuring that I can easily dump it to change tactics if needed.
I'll also almost always try to make it appear that I have less E than I actually do, trying to bait my opponent into dumping his own to turn with me. I do that by adjusting angles though, not by dumping my own E. It's not at all uncommon for me to fight a spit that's initially higher and faster than me, and for me to then have an E-advantage over him shortly thereafter.
Of course it's all situational, but in broad terms to try to force the overshoot, I'd be pulling higher G's for turns, using rudder to create drag, going nose high where possible in the scissors, deploying flaps as I'm able. Usually at some point in this unless the spit driver makes a mistake he uses his climb rate to get above me and it's all downhill from there.
I think I maybe need to revisit my tactics against Spits, as my abilities have changed a fair bit since I thought about it analytically.
Wiley.
I just want to point out that this is NOT what I'd do to create an overshoot. In broad terms, I'd never try to do it that way, unless I was desperate and in big trouble. It takes away too many options.
Do it with angles, rather than trying to do it by slowing down. Once you create the overshoot, you'll want to be fast enough to kill your opponent. If you're too slow that won't happen.
I'll agree with the nose high in the scissors part, for two reasons. One, is position, the second is so that I can come back down again (build speed, retain E). I'll also agree that I use flaps, but I'm NOT using them to slow down (that's just an unpleasant by-product).
Finishing the fight fast is vital. The longer it drags out the more problems you'll have; both with the guy you're killing and the next one(s) along...