But would a radar guided missle detect a flea sized Extra, especially if it was flying between trees, can a heat seeking missle detct the heat signature from the exhaust of a piston engine? if a high speed fighter can do a turn to put it out of the turning capability of missle, I would have thought an unlimited category aerobatic aircraft with it's ability do literaly square turns would be even harder. I admit my knowledge of missle is of the Vietnam era however. I stand to be corrected.
Most of my knowledge comes from articles such as this.
http://www.ausairpower.net/TE-Evading-Missiles.html
This clip explains what I mean about maneouverability of these aircraft.at low level. I cant imagine any missle flying at 2000 mph matching the directional/angle changes of these aircraft.