Whenever I ride DB with my friend Sean (Mr. Smiley) we try to keep our bars up as high as we can, using several different methods. Honestly, as long as I can see that black line on the bar I feel perfectly safe, even though I get the feeling that I am slipping out of my seat when going over a couple of the hills. I dont think it is possible to fly out, unless the bar is so loose that you cant see the black line .