UPDATE Dec 2021 - High Prairie Trailhead for Lookout Mountain (and other summits in the area) are not accessible from Dec 1 to April 1 due to closure of NF-44 and other routes to vehicles more than 50 inches wide. SO - if there's snow and you've got a snowmobile, have at it. See the photo below.
Shortest route is 2.2 miles round trip.