I do use a controller, the trick (and fun) is that you're forced to learn where the bike's max lean angle is, and then modulate your steering input to never exceed it. Being able to 'click' the joystick to the edge without consequence takes some of the fun out of it. Before I knew about GP Bikes, I loaded some street bike mods (which I now use in GPB), into MX Bikes and it was a blast. If the chassis flex and proper first person view hadn't spoiled me I'd have kept on in there. A max lean angle setting could work, so long as I could set it to something ridiculous like 90 degrees