Maybe you need more robust skid shoes?
One more thought, as I'm out preparing for our supposed forecasted big storm ...
In the last 50 years I've bought and sold a lot of equipment, including a number of snow plows of all sizes.
As I was greasing, checking bolt torques, etc., I recalled that most snow plow skid shoes, from garden tractor to pickup-size, come without any washers and lock washers. Just a bottom and a top nut.
People always complain that their skid shoes come loose, and they fall off.
If you have skid shoes, and they don't have flats and locks under the nuts on the adjustment bolt -- add them. Remember -- the lock washer goes under the nut, and flat washer goes under the lock, against the structure.
