How much space does Rainmaker need indoors?Updated a month ago

Minimum space requirements

For reliable shot tracking indoors, Rainmaker needs two distances to work correctly:

• 5 feet behind the ball: The unit should sit approximately 5 feet directly behind the golf ball, aimed down the target line.
• 10–14 feet of ball flight in front of the hitting area: Rainmaker's radar needs this travel distance to track the ball and calculate metrics accurately. A net or screen placed closer than 10 feet is the most common reason shots are missed or spin data is inconsistent indoors.

So in total, you're looking at roughly 15–19 feet of usable space from the unit to the net as a baseline.

Why more ball flight improves accuracy

Rainmaker uses Doppler radar to derive metrics like spin, launch angle, and carry distance. With longer ball flight, the radar has more data points to build an accurate picture of the shot. With shorter flight, some metrics — particularly spin and launch angle — have less to work with and can be less consistent.

If your space allows it, 14+ feet from ball to net will give you the most reliable readings across all clubs, especially drivers and long irons.

Tips for tighter spaces

If your room is on the smaller side, here's how to get the best results:

• Prioritize getting as close to 10 feet of ball flight as possible, even if that means adjusting your mat position or net placement.
• For short irons and wedges, accuracy is generally still solid at 10 feet. Longer clubs benefit more from extra flight distance.
• Make sure the net is taut — a loose, swinging net that moves back into the radar path between shots can cause false or missed readings.
• Keep large metal objects (shelving, exercise equipment, HVAC units) away from the sides and rear of the unit. Metal interference is a common cause of erratic indoor readings.
• In very small rooms, radar can reflect off low ceilings or close side walls. If you see inconsistent results, try repositioning slightly or angling away from the nearest wall.

Outdoor use

Space requirements are the same outdoors — 5 feet behind the ball, aimed down the target line. Without a net limiting your setup, outdoor sessions typically give you the most consistent data across all clubs and metrics.

Still having issues with indoor readings?

If you've met the spacing requirements but shots are still being missed or data looks off, see our article on Why isn't Rainmaker reading my shots? for a full troubleshooting guide. Or contact us at [email protected].