Randy wrote:

This is 30 year old advice but I think it still applies. My parents
had a yard with a steep slope and were told to always ride the tractor
up and down the hill and to push a mower across it.

My shop has some steep hills and I push mow all of them, the new mower
has a brake/kill switch on it, which is a good thing, I slipped down
the hill a few times.

I ride my mower across the steep slope around my pond with my hanging
off the uphill side as ballast. No sissy kill switches on my mower...