Overheating after pulling a snow plow for about ten minutes

Not an uncommon thing with a plow. You are pushing a large air dam in front of the truck. You need to make sure the radiator is in good shape and the coolant is full. A full cooling system flush can help.

I have had the same issue myself and added the largest radiator that fit in the mounts, an extra cooling fan, large trans cooler and switched to a waterless coolant. It made the situation much better.