I have owned both rubber tire and tracked equipment, when it comes to steep inclines you NEVER will go across a slope, sideways as safely as you can while traveling up and down that same incline...
Makes no differance what you are doing, mowing, dozing or just driving...
It is generally faster, to cover the area, to go across a slope sideways while mowing... But the equipment you are opperating will eventually let you know when you have exceeded a comfortable angle, at that time up and down the incline will become the only safe way to procede...
When it is too steep , that is the time to get out the weed eater, OR just leave it alone...:smile:KennyV