Awesome guys, thanks for the tips. I will try them out this afternoon. I'm at about 800 skill atm so I haven't been seeing this curve a lot, but I figure I'll need to do it to beat steadily more difficult opponents.
As for jumping to hit it Bryan, do you mean when the frontman returns it? I can make my frontman get some mean air if I time the swing right and do it while he's not quite within range of hitting the ball (but not too far back either). He'll get pretty suicidal trying to get to that thing sometimes. I suspect that you are seeing it when you swing fast because you're steadily swinging as you are out of range and when you hit that "jump for the ball" distance, your mii does just that.