Dragonfly Depth finder- Adding Way points

FYI: DragonFly 4 pro, 5 pro and 7 pro functions are the same. You actually set a way point while on the water, marking the location. You can add a way point if you know the latitude and longitude of the location you would like to be put onto your unit. First step is to create a way point then go to edit, change (edit) the Lat & Long to the new location numbers. Saving it will update that way point. You can do this at home while not on the water. Doesn't make a difference on the actual location (lake) you are adding it to.