Just an update on this.
Using this overlay has really improved my scoring, no more post it note, or cardstock ruler stuck on my screen.
I've even added the putter distance scales for my nike putter to my "overlay image", set off to the far right side. It lists all the distances based on the percentage of the meter. I only included the data for the 10, 20 and 50 foot meter scales. I'm never further away than that..right? :)
If you are handy with Photoshop or similar software the possibilities are endless.
You can fit all sorts of stuff on your overlay image, then its just a matter of positioning it on the screen.
No more math in my head :)