This is for hands on experienced skid steer operators: Have about 60 stumps ranging between 4 to 8 inches in diameter. Stumps were cut last winter if that means anything. They were cut high leaving about 5 ft of the stump. Will a skidsteer be able to push these over, or will it will require digging around the stump first? Trees I believe were locust and sassafras. Will rent a skidsteer if this will get the job done. Thanks.