Zero turn machines are their own breed of machine as all movement and direction come from the rear wheels. When I'm mowing up and down hill, as I approach the crest of the hill and about to travel down the hill, I bring the machine almost to a dead stop to bleed off the inertia of the forward movement. Then I slowly start down the hill with the idea in mind that I will need to stop the machines movement and turn it around to go back up. This is why most ZTR manufacturers recommend mowing sideways on hills rather than up and down, however up and down mowing is sometimes the only option. 
With no direct control of the front wheels as in a lawn or garden tractor, these ZTRs sometimes go just wherever they please!!! It took me about 100 hours to become accustomed to handling my first ZTR and I came close to getting rid of it!! Now that I'm comfortable with my ZTR and have cut my mowing time in half, I wouldn't be without a ZTR.
Mad Mackie in CT:laughing::biggrin::smile: