I was messing around with my Service Levels formula, using only the top 50 2016-reviews-only courses to find good locations for people that only want to only play top 50 courses.
For example, here in the Twin Cities a player would naturally want to live right between Vision Quest and Blue Ribbon Pines, which would also allow for intra-day drives to play at Bryant Lake.
Then, when they want to expand out to more courses by traveling farther (say, overnight trips), they would want to relocate to near Wildcat Bluff in Iowa. From there, all the courses in IA, MO, IL, and WI are within reach.
After playing all those, they might start flying to play courses. The central location for all 50 courses is on the KY, VA border.
Or, if they want to continue overnight drives, they could relocate to Charlotte and Philadelphia, then Denver, and finally sweep up all the other courses on a single road trip.
The orange dots are the courses, the blue dots are central places where a lot of courses are within reach, and the blue lines show how a player would want to move when their range of travel expands.