When encountering a Pokemon you intend to catch (seems to work best on Pokemon of reasonably high level; at least high level 30s), weaken it in whatever manner you desired (HP reduction, status infliction, etc.) then throw an ordinary Poke Ball. When the view zooms in on the Pokemon, use your stylus to trace counter-clockwise circles around the Poke Ball symbol on the touch screen. While doing so, make sure to not trace your circles too fast or too slow. Try to find a good median speed to trace with. This should either make the contained Pokemon roll more or get captured in one roll. Note: That will not work every time you try to catch a Pokemon; it can simply make captures easier with ordinary Poke Balls.
