I learned to fly on the Hawk Sky and it's a terrific trainer. The plane will recover on its own, just center the right stick and power down. You do need a little altitude. In the summer, you can slowly circle around and when you find a thermal, center the right stick, cut power and you have a great sailplane. I also have the Hawk Sky it on my Clearview sim. I currently fly it with a 2200 mAh Blue Lipo battery. It fits fine and does not alter the C.G.