Alex,
I understand your concern, but I don't believe the clearance on the Cirrus wheel pants are significantly different than most RVs. Most grass areas that are flat shouldn't pose a problem. There are some dips along the 18/36 taxiways that have been known to eat an aircraft or two. Usually somebody going too fast or not paying attention. The folks in HBP do a pretty good job at marking the problem areas for you to avoid. I can't speak to the north forty, since I've not parked there.
bob