My thoughts on driving up were, should you lose traction, you simply stop moving up hill. If you choose to start at the top and all of a sudden it gets a little steeper and you lose traction. Kiss your Grass goodbye. If you remember your physics lesson, you static friction is much greater than your kinetic friction. I.E. when the tire isn't slipping or riding on the ground it sticks better, once you start sliding, your toast. SO, if I had never mowed it before, I would start at the bottom, so I could atleast get back to where I started, no way would i ever break over a hill if I had never climbed up over it before. even then, it sounds like I wouldn't volunteer for it.