Very good point about the brakes, and keeping them locked together! On a slope if you brake only one wheel you will flip the tractor. Mine are always locked together unless I have a specific reason to unlock them. I should not have taken that for granted as we each have different uses for our machines.
I suppose my earlier post should have read:
DECENDING: With a hydro, keep the tractor in LOW gear, do NOT push in the clutch, use BOTH brakes if braking is required, keep the implements low, do not even think about turning, make sure there are no ruts in your path.
CLIMBING: With a hydro, keep the tractor in LOW gear range because if you get stuck going up hill you will end up having to shift ranges and that will require locking your parking brake, depressing your clutch and shifting to LOW gear.
One of my tractors can climb my small slope in MID range if I don't have the bucket full or a heavy implement hanging on the back, the other tractor only has LOW or HIGH and can only assend in LOW. I make it a practice to climb only in LOW range simply because I know it will work safely with either machine, and because even with my larger tractor, there are times that MID range is not geared properly to climb (such as when I have a load).