My current landlord has been in the earth moving business for many years and I chat with him regularly. He pays a bunch for insurance. Stop and talk to some guys with big yellow toys parked in their yards.

As was stated earlier in this thread, the undercarriage on crawler machines can get very expensive. People sell them instead of replacing the pins in the tracks and that is just part of the job.

My landlord has wheeled machines now. A big loader, a backhoe and a bobcat type machine. He also has several trucks and trailers for hauling and spreading dirt and hauling the earthmovers.

It would be easy to fall into a trap with run-out equipment. When you weren't working a job you would be fixing the equipment.

A couple years ago in Maine a guy told me he was paying $4000/year for insurance on one dump truck.