I've noticed alot lately that some of you folks are concerned about mowing on a hillside with their tractor and worried about rolling over. I'd like to suggest maybe look into purchasing a Toro mid-size walk behind. The Toro walk behind is one of the toughest mowers I've ever owned and use in my business. It handles hills very well both up and down and sideways. I used a Proline 14hp with a 44 inch deck and its an awesome mower. I've had mine sine '99 which back then cost me about $4500. I spend an additional $250 and went with a stand on two wheel velke so I could ride behind it rather then walk. I also spec'd mine out with a gear drive transmission and a floating cutting deck.
Take a look if anyone is interested
www.toro.com/en-us/professional-contractor/mowers/mid-size-walk-behind-mowers/pages/default.aspx
Take a look if anyone is interested
www.toro.com/en-us/professional-contractor/mowers/mid-size-walk-behind-mowers/pages/default.aspx