I like driftfishing the bead. I use a 3 ft leader with the bead pegged 1 to 2 inches above the hook. I do hook most of my fish in the mouth with this method. Occasionally I do hook some fish from the outside of the jaw in. What I've noticed though is that the hook will be in the side of the jaw (from the outside in) that is closest to the bank I'm fishing from.

In order for this to happen the fish would have had to be facing downstream. Which tells me the fish turned downriver chasing and then biting the bead and getting the hook pegged in its jaw.

There are flossers and there are people using very small presentations but they are not one in the same.