I understand there are issues with responding and with the picture. I'll look into it.
The results of Sheri's usability testing are in, and in Notes 8.0.1. we'll change the snap control to be as shown in the picture below-- where there is a darker area around the arrow.
When you hover, it will turn orange (like it does today.)
I know some of you have cooler ideas with fisheye type things, and we might be able to consider those in a future release.