RE: Nose, neutral, or tail heavy best for IMAC?
I would have to agree with what you guys are saying...
You want your plane to be able to fly inverted wthout having to push a lot of elevator...there are many lines in the routine that you will be inverted, so you don't want to be in a situation that every time you roll over you're fighting to maintain a horizontal line, it will look choppy and wavy.
It is more of a "feel" thing to get it right where you like it, if your too far back it will be ultra-sensitive on the elevators, and climb on an inverted 45. If your too far forward,when you're inverted, you will need a lot of down elevator to keep the nose up...also entering the spin, you need the plane to stall on command, too far forward, and it will not stall properly. At the stall moment, you enter into a 1 1/2 turn spin, followed by an established down-line, with a constant raduis pull-out to horizontal, so you dont have a lot of time to put it all together, thats why you need that stall to be predictable and on time.
Just my thoughts,