Choose A Visual Key
As you view the line for your putts, choose a visual key like the cup or the golf ball to set a distance measurement for your line.
Keep The Visual Key In Mind
Once you choose your line and utilize your measurement key to pick a target, let the putter do the work..
Cup or Ball Width Are Good Tools
Width of the cup (which incidentally fits two golf balls side by side) or the golf ball are easy to visualize and use for your line.