Re: handled GPS consumption while in achor watch mode?
I have the same model, too, but I use a different approach than BubbleheadMD. When cruising, I carry a plastic freezer bag filled with a variety of new batteries (from Costco). I am surprised by how infrequently I have to change the batteries, although I turn it off and on instead of leaving it on.
I used the Garmin 76Cx for a day sail once a week for a month, then continuously for six days, off and on, most of the day, and only replaced the batteries as a precaution on the 4th day before nightfall, so I would not have to change it at night, if it became necessary.