How often can you mow at full speed, or even 3/4 speed for that matter? Conditions have to be just right to take advantage of the speed of a ZTR. The lawn has to be fairly smooth, grass can't be too long or wet etc.. I have some rough spots on my lawn that really bounced me around. So, I guess I'm wondering how often you can take full advantage of the speed of a ZTR without losing cut quality. Thank you, Joel B.