With the hyd steering of the zero turn mower its not possible to "feel" the tires starting to slip, so i cannot stop it in time if it spins.
That's my understanding too about the regular zero turn mowers. You can't stop them going down hill, and they won't stay on the slope going sideways. I just got back from looking at the Cub Z-Force 48" with the steering wheel. The front wheels are controlled by the steering wheel--not on casters like a regular zero-turn mower. I think the steering wheel is also coupled to the drive like a regular zero turn. It's a hydrostatic drive like my Cub LT1554, and when you take your foot off the pedal, it stops on a dime. It seemed like it might work pretty well on slopes.
But I also want to look at the Gizmo Force. It is similar I think, but heavier duty and bigger--and a lot more expensive.
