So far, so good. I haven't had any freezing problems. I placed the Glo(GPS antennae) in the chart drawer which is close to a couple 12DC plugs. It pulls a strong signal below the fiberglass deck, so I'll just leave it there in the bone dry drawer. I put the ipad in there as well for charging or storing.

I simply run the 12V charge cord through a finger hole to the Glo if it needs charging. I read(on Panbo.com) the Ipad uses more juice with the internal GPS antennae working, so maybe this arrangement will prolong the Ipads battery(?).

At any rate, I haven't seen much drain beyond normal use on the ipad. That's good because the mobility of the ipad, cabin, cockpit, berth for anchor watch(I'm long sold on the accuracy of a CP for anchor watch), I'm thinking the charging requirements on an ipad and the glo are less than what we used to need to charge Macbooks aboard. That's good, I so enjoy a simple battery charge storage system on Xmas.

I'm especially happy to have the two gps chartplotters going in real use. We had pea soup fog one day crossing Western Penobscot Bay. I prefer our old CP, locked in the companionway, to stay at a good magnification for the nearby hazards. I'm used to it's track line, depth details, hazards and it's placed so I have a clear view over the dodger of lobster pots, boats, etc ahead. Plus, anyone else in the cockpit can keep an eye on it("do you see that * ahead?"

The Ipad gives me the broader view, across the bay, and the close ups, much faster. Plus it gives me the close up charting to search anchorages ahead. In the limited size of our cockpit, this is a great compromise over a larger CP. Eventually, I may figure out a mount or something and perhaps add a cover, but not this season.

One caveat! You can get lost looking "ahead" on the ipad while the boat is on AP, planning an anchorage, route, and lose track of what's ahead.

But that's nothing new, it's the same old demon- distraction at the helm.