Ideally, you should really learn your rudder before trying to hover!!! Practice slow rolls using ALL inputs to keep it perfectly level. Pracitce knife edge flight-belly in and out until you are perfect at it. Practice harriers-upright and inverted until you don't have to think about control inputs on the rudder (especially while inverted). Then, practice hovers belly in and out-when you have to bail out, you won't have any surprises as you will allready mastered the unsual attitudes that will surely be encountered. I use only 6V. and good servos-makes a huge difference!!