Well, lying wouldn't be a ballsy thing to do, so I'll go safari to say that since I first played blue version, I honestly believed that pressing B just as the ball shakes every time would make it easier to net the pokemon.
While at first, it can be hard to timer the presses, when you repeat this method so often, it becomes a walk in the park, but even though I've gotten great at it, It's failed more often than not.
I can be sure that an ultra secret method to ensure capture is a luxury that we just don't have, though I can see why the idea of one is allureing, such an addition would really throw off the playing field, and it would no longer be level. We can Poké around as much as we want, but we'll nest-ver find a way to ensure a quick catch. If you just love to use a method just for sport, by all means go ahead, but if you're going to dive off the deep end and look for a trick that really works, you should know that there could be heavy consequences.
That being said, even though I know it dusken't do anything, sometimes I'll catch myself, once in a blue moon trying the B-button method that I cherish so. While I try to curb the habit, it seems that I can never truly master a great enough effort to stop. It's no walk in the park, ending old habits.
As a final note, my friends, if anyone tries to tell you of a way to make captures easier, he's just trying to pull a fast one. (Of course, if you tell him that, heal vehemently deny it.)