Golden rule: The best way to beat a lead turner is speed disparity. If he is slow, you fly fast. If he is fast, slow down.
If a con tries to lead turn you from inital 3 or 9 oc position, it is pretty hard for him to get a shot too, unless you are very slow, or he is a snapshot killing Hog
If he is low but with E high enough so you can't run away, I suggest you turn into him.
Since he attacks you from below, he is obviously an aggressive type. Fake a HO, he will take it most likely. Your intention is not to HO him, but to cross paths and have an option to bug out. Your turn into him should worry him a little. Try to go under him if possible, harder for him to shoot you, and maybe he even does a Split S
The closer you pass to him, the more danger of a snapshot, but also more chance he'd do a hard turn after and lose his E. He can choose now, either a HO or lead turn. Many aggressive types go for both.
Jink and avoid HO and extend. If he does E conserving reversal, you now have decent separation to return and attack or go home.
If he does lead turn after he tried the HO, one simple Immelmann should put him on defensive.
If he avoids HO and goes for lead turn, you have 2 choices:
9 out of 10 times I am substantially faster than the con. In that case I'd just turn towards him to make him cover even greater angle with even smaller turn radius in the lead turn, and usually jink a little to spoil his snapshot. He usually turns hard at this point, bleeding much E. After that I do very gentle zoom and Immelmann. Now he is on defensive.
1 out of 10 times the con is faster. In that case I nose down a little and turn in his direction since my turn radius is smaller. He continues his turn but overshoots. Meanwhile I time my own lead turn in vertical, and actually end on his six. Spits have a bad habbit of not changing their maneuvering plane, so they keep turning in almost horizontal. I have killed many Spits this way in 109G-10.
Better turners can still compensate for an overshoot in this case. Usually you both will meet coming opposite ways. Cross paths and extend, better turner is no good to tangle with in a co-E situation. With P-51 or 190 you can gain advantage from this point though.
[This message has been edited by Hristo (edited 02-01-2000).]