Someone on the forum kindly pointed out that, to access advanced flight modes, you need to assign the mode to the quick launch buttons. I tried out the FLY:Manual mode, the Acro mode, and the Sport mode this morning. FLY:Manual seemed to just eliminate the drift lock. It still flew very much like FLY. Acro still gives you some altitude lock help but lets you pitch as far as you want which allows barrel rolls and loop d loops. I gave myself plenty of altitude before performing a roll but was surprised at how much altitude I lost during the maneuver. Practice helps. Give yourself plenty of height before engaging Acro mode for the first time and be ready to punch it back into FLY if things get hairy. Sport let's you pitch like crazy but won't quite let you roll over. This is a great mode for speed, but with speed comes quick loss of altitude. I started my speed run atop a large hill so I had the perfect slope to fall with and build up speed over a quarter mile or so. I'd be surprised if I didn't break 55. Acro mode is hair raising. Easiest way to crash your Solo hard. But Sport mode seems like a lot of fun if you have the open space to get some speed built up. So far my favorite flight mode.