I believe the issue is whether there is a slight stutter each time you use it, so that you don't immediately hit the top zooming speed. It seems to me that, for certain games in the series, Kart 64 most notably, there is in fact a very palpable stutter on each subsequent press of the button, such that jamming the button may actually slow you down, and the best timing is to be found in the tradeoff between that initial stutter and the loss of speed that occurs if you wait too long between uses. I'm not absolutely certain, however, how this may have changed in later games in the series; I still feel that jamming the button as fast as you would, say, in a Mario Party mini-game is never ideal with a golden mushroom, but I've not spent enough time gauging it in the Wii version in particular to be certain.







