I do the ol' shaking-while-the-soundhole-points-downwards trick. After about 30 secs. of shaking (max), I hear that satisfying "ting" as the pick hits the strings on the way out.

But I totally know what you mean; I used to play acoustic much more, and that darned pick would fall in half the times I played. Now I'm more into using my fingers, though.


... oh, and please, don't kill me.