I have only used the core with the snowblower. Yarbo gets stuck on snow that accumulates under the bottom if the attachment is raised. Once the tracks slip Yarbo sits on a pedestal of packed snow. The only way to unstuck Yarbo is venture out and pull it off the underlying obstical.
Add separate right and left sets of linked front and back legs that are embedded and hinge to the bottom of Yarbo. Powered to extend and retractable similar to landing gear on an airplane.
These can be independently controled to walk yarbo off it's obstruction as a remote last resort.
Likewise, if the mower is attached and rock or stick get caught under the core. The leg can remotely help push Yarbo enough to regain control.