Note: I changed the canvas screen to a 9x9 power screen and white foam balls because I hit a real ball through the canvas after about a month. I use real balls for putting. Once I accepted using the foam balls it made sense to just go to the power screen. I had to switch to white foam balls because the yellow ones were making an imprint on the screen. Finally, the screen works for me because it is powered, so I can close it and pull the car in with a remote.