Start with the conditions you can repeat
Measure the usable corridor, record the surface and direction, and choose one observable practice job. Indoor results describe that setup; they do not automatically transfer to a golf course.
Use indoor practice for narrow, repeatable observations while keeping surface, pace, slope, and transfer limitations visible.
Published sources and editorial methods; GolfGNG firsthand surface tests remain in progress.
Indoor results do not establish performance on varied greens, slopes, weather, or competitive pressure.
Check the surface, then establish a repeatable baseline.
Measure the usable corridor, record the surface and direction, and choose one observable practice job. Indoor results describe that setup; they do not automatically transfer to a golf course.