Gee the iPhone takes a pretty clear video Mitch. I was always procrastinating about getting a dedicated GPS like a Garmin or similar but now with the iPhone GPS applications and waterproof housings available, I think that is the way I will go. With the speed technology moves, sometimes it pays to procrastinate. And of course there is the other benefits with having and iPhone ie: music, camera, video, phone etc. Stringy loaded Navionics onto his Samsung Galaxy for $15 which he is pretty pleased with. Don't know what limitations it has though, if any.
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Don't take life too seriously................it ain't permanent.