www.podunkideas.com <--Click here
------------—————
https://www.crappie-gills-n-more.com/
https://cornfieldfishinggear.com/
------------------------>> Pro Staff Sonar Advisor
I don't think there is any way to add a way point an existing screen shot. You can scroll back and set way points and the take a screen shot. You can also mark a way point with the cursor and then take a screen shot like I did.
Not sure if this is the shot you want? This a Simrad NSS8