Chart plotter stuff
Some thoughts -I have a Garmin 12xl that I connect to my laptop with the data cable. I use nobeltech software, but that doesn't much matter to this discussion. I have a small boat - 25 feet - and the cockpit can get wet, so I don't use the laptop topside underway. I do use it at home and on the hook for planning purposes. I find that I don't miss the chartplotter at the helm. My thought on the subject is that if you close enough to anything that you would be threading the needle looking at the display underway, you are better off looking out and around, or if you must look at a nav display, at a radar screen. That said, it is nice to have a graphic display of where you are and where everything else is. This is not denigrate those with chartplotters at the helm; I just don't care for it personally.Any GPS with a nema output is going to work for you. I would choose Garmin, but Magellan is probably just as good for your purposes. I find Garmin easier to use on the whole, but again that's personal. As far as a repeater screen for the laptop, they exist but they're very expensive at this point. I had a client look into intalling one and the best price he could find was north of $1000 for a relatively small screen.Good luck with your hunt, and let us know what you wind up doing.Justin - O'day Owners' Web