I'm probably the worst one to ask about what track rigs can do and what they can't because my personal experience is growing up with a dad who had track rigs for the purpose of bringing home moose, caribou, sheep & salmon to put on the dinner table. We had a 1956 Bombardier J8 w/ a Chrysler flat head straight 6 where my job was to mop up the water coming out of the radiator going up hills so the plugs didn't foul. We also had a Snow Trac, a Play Cat, a Ranger and a Thiokol for awhile. None of these ever ran in the snow. I'll admit that you avoid rocks when you can but rocks were also part of going sheep hunting. I think that is why when ATA gets a tired track rig in from the woods, they're not tired from grooming trails but probably tired from being an Alaskan shopping cart. ?