Henning said:
The key is in percieving energy losses and gains and predicting just when you will be at a critical energy state to execute the manuver with just enough energy.
One of the excercises my guy made me do was: 2 to 2.5g pullup from level cruise right into a vertical upline, then begin a 0g pushover, stopping at an attitude that had us right at stall speed, then he would call "left" or "right", and I'd have to bang a 45 degree bank turn at stall speed, one continous maneuver. If the plane wasn't shuddering as we went around the turn, he (like that dude in the beer commercial) whacked me with the cane and yelled "again!".
If you really need to get 500-1000ft of altitude RIGHT NOW, you could do the same thing in a 172 or similar.
Like with a hammerhead, you have to visualize exactly the spot in front (above really) you when you will have just enough energy left that when you kick the tail around, the plane will pivot around leaving the wingtip anchored on a point.
A properly executed hammerhead is the most enjoyable thing I've ever done in an airplane. At the top of the climb, there are no g's pulling on you, it's peaceful, and to see the plane pivot about that inner wing tip and see the world rotate back into your view, well, its just pure magic. I can't really put into words how graceful a good hammerhead is...
The one manuver I think every pilot should experience is a Split S, cause let me tell you, from the drivers seat, they look the same as when you hit wing tip vvoricies from somebody big and have the same type of energy management problems on recovery. Everyone should do spins and a Split S, incorperate it into your next BFR.
We didn't do many, but the Split-S scared the crap out of me, man, you have to get and keep that stick back quick, lest ye become a lawn dart. (Edit: You have the same energy management coming out of the hammerhead, high lawn dart potential.) Spins, however, were quite fun (after the 1st one).
Aerobatics are good times, I WILL build that RV-8...