Once a week, I run down a small mountain (3 km, 450 m denivelation). 1/3 is asphalt, but 2/3 of it is a trail consisting of rocks and roots poking through mud, covered with dead leaves and the occasional loose stone. The surface is also wet or frosted depending on the weather. I don't jog slowly, I alternate sprinting and quick walking (for when I am out of breath). My gait doesn't help: I tend to land hard on the heel, which is cumbersome downhill.
If I try doing it in running shoes, I'll soon break an ankle. So I'm doing it in hiking boots.
While the hiking boots bear weight well and don't slip, they are still not optimal for running. Is there a way to make it easier on my feet? Maybe some kind of inlays? Something to correct for my overpronation?