The pistenbullys are pretty expensive, but you can buy decent older grooming tractors cheaper thenyou can a new snowmobile !! Older tucker,Bombardier, thiokol, snowtrac snow groomers can be a lot of fun for the whole family.
When I was looking at getting a cabin that would require a several mile winter approach a track was in the running. A decent used one will set you back a bit more than one new snowmobile, but less than two and you've got a heated cabin to boot.
The problem with putting tracks on atv's is they cost a fortune, the drivetrain isn't designed for the additional load, and you'll get terribly mileage. You can't beat a utility snowmobile for getting around in the snow.
