I've started using it to print an aerial shot of the property and circle the trees to be worked.
I've appreciated it a lot more myself too. Like the historical Catalpa I worked on and made a page for, I posted GPS coordinates next to the tree, but embedded them in the icons on the page
http://www.mdvaden.com/catalpa.shtml
If you hover your cursor over the Google Earth Icon, you can see the code, or maybe click it. The coordinate code can also be done just as a link like this (Ecola State Park)...
http://maps.google.com/maps?q=45.919438,-123.973873&output=kml
There is no space after the comma in code. But to enter those coordinates in Google Earth search box, there must be a space after the comma. And Google Maps...
http://maps.google.com/maps?q=45.919438,-123.973873
May need to just zoom in, or zoom out.
What you did with the screen shots, I did for one page about a year ago when I was talking about using Google Earth to see what part of town had the most vegetation, for targeting advertising.
Now what you wrote about, is one more additional use.
In the past, I've always been behind on technology - cameras, computers, etc.. With GPS, I got off the line late, but plan to use it a lot. I put GPS coordinates on almost every hiking page within my site's advice section for favorite trails.