+1. In fact, flying 3D maneuvers progressed me ahead in flying faster than anything I have done, except for the simulator. I now fly a 50cc WH Extra 260 and knifeedge, hovering, flat spins, etc. would be impossible without the rudder. So if you are going to progress to aerobatics later, which you most likely will, learn the rudder. I will tell you though, my instructor did not use rudder either, but he was a great instructor and flyer. I taught myself to use the rudder, first during landings to line the plane up, using ailerons to keep the wings level. I think I read about it on this forum.