I don't compete, but I like to fly the jet the way the real one would in a demo. Number #1 error is too much speed.

My suggestion is go to youtube and watch HD videos of the EF flying at RIAT. You will get tons of ideas from there.

Something I've noticed, many pilots fly the manouvers as if they were flying IMAC or pattern. I think that is a bit unrealistic too. Most jets dont roll perfectly axial. I like pitching in a bit of rudder and elvator to barrel that roll a bit when coming out of a 1/2 Cuban 8 and similar. Even when doing "axial rolls", lifting up the nose and "barreling" that nose looks more realistic than shooting for a perfect axial roll (although judges may disagree with me, and in the end, judges rule!).

Also notice on most fighter jet demos, the jet does a manouver at show center, then turn offset 45-60 degrees, start the turnaround manouver (1/2 cuban being the most popular) and slowly return to centerline as they roll out of the manouver.

Good luck , youtube is your best friend! I was lucky that I worked at LM and got to see the Viper practice for airhows frequently. I observed it for many years and learned a thing or two. You have to use inertia, and develop the timing to use it before gaining too much speed. :-)

David