Another good trick, when driving around get someone else to drive, that way you can see way better on really scour the landscape. Also fall, winter and early spring you can sometimes see pumps that you never will see with leaves on trees. In our town we now have double-decker buses. It is truly amazing what you can now see in peoples yards.
Also if you are in a 4x4 or higher vehicle, you can see better over highway barriers, found 1 pump I never ever saw from a car or when i was driving, just could not see over the big barrier curb...dodogas