Ooooo, that thing scares me
The point of a balance wheelie (and I ain't great at them) is that you take the bike to the point where it is about to go over backward and then let off the throttle and keep it at the tipping point, if you take it up and hit the wheely bar there's a bunch of bad things that can and probably will happen
The stunt guys put those on because they use it in their show but they don't need it