The entire trick to 3D flight is to remain below stall speed. A snap is a situation in which one wing or elevator half is stalled and the other isn't. Regular flight = both flying. 3D = neither flying. Snap is 1 flying.



Back to the post topic. Sunday I was doing flying backward rolling harriers into a 15 MPH headwind. Rolling a plane that's flying forward but going by you backward will mess with your head!