Once in a blue moon I find myself needing to pick a point on the map screen of my nuvi. Maybe I know about where something should be on the map, but I don't have an address and there's no POI, or the nuvi has a strange road name. Whatever the reason, accurate placement of the selected point is important. But rarely do I get it right on the first try.
Here's a tip...select a point on the map. Now drag the map. The selection arrow will stay in it's current location on the screen, but the map moves underneath it. You can drag the map around until you get the arrow to line up with the location you're aiming for. You can see in the next image that I dragged the map to an intersection.