TDeacon.
Lets take a few steps back.
What is it that im trying to acomplish?
I have a con at my six. He is slowly closing and I cant out run him. Im at the deck.
I want to reverse so that Im facing him and Im co alt with him so that I can merge with him.
If I flat turn I will give up a lead turn shot.
If I do a high YoYO he will get a lead turn shot in the yoyo as its just a tilted turn.
If I immelman he will get a "lead turn shot" in the veritcal. Even if he doesnt get it I will not be able to get into the position where Im facing him at co alt and can merge with him. He is too close.
High YoYo is the best of options of these manouvers, still not good enough.
The sudgested tail slide low yoyo does give you a possible solution but imho you waste too much E.
The entire point of my discussion is trying to decide where you wana be when you exit the manouver. Then figure out how to get there in the right moment.
If you in the given situaiton wana just roll and do a split s. please be my guest...

But you will slam the ground as you dont have the room under you. with the barrell roll you do create the vertical room for your self. plus the fact that even if you have the room and you wana exit your manouver co alt with your enemy then you need to do a vertical move. if you roll and split S then you need to climb up to the enemy. So it really doesnt help you at all.
Tex