The Funtana is very capable at doing harrier rolls. I have one and they are very nice. I practiced on G2 first until I could do them. Then I started doing it with the Funtana. There was no difference using the sim or the funtana. At first my plane would be doing a high alpha rolling circle,(timing off) then I practiced a lot on G2 now I can do rolling harriers right down the length of the runway.