If you're running a 4 stroke Honda OHV GX200 6.5 motor, you're not always looking at having the maximum grîp so watch out with the leaning to the outside in some corners. In extremely tight hairpins where you actually have to brake and slow down conciderably, you actually dont want too much grip as that'll make the motor bog down. Those things have little power and torque at low RPM's so you need to try and keep the RPM's as high as possible for as long as possible. I guess thats why they say smoother is faster in those things, harsher point n shoot methods will just make you lose RPM's and then its harder to get them back up.
@ Madcat : When you lean forwards you don't lose grip, you just make the front grippier. So if you're having understeering issues and can't get the setup fixed, moving your head forward a little on turn in could help. More weight in front = more front bite!