Hello, I was hoping to hear from some of you that may use/have used rubber tracks in the Texas Hill Country. I realized several years ago that the only tires that would actually hold up on that sharp rock was the "severe-duty" African mining tires (Galaxy Hulk L-5). Has anyone had any real luck with the rubber tracked machines?...and does anyone know if there is anything similar to a severe-duty track for these? I appreciate your time, Scott