Ailerons arnt usless in a TR. They rely on propwash unlike in forward motion it it uses its speed. Aierons are actually a vital part of TRing a smaller model with less torque.

and a harrier is classified anything between the angle of stall and the hover. So if your angle of stall is only 20 degrees and your rolling it and going in a horizontal path that its a rolling harrier. if your way past the angle of stall at say for example 50-60 degrees and rolling on a forward path, that is also a rolling harrier.

ian