My understanding of LowranceNET is that if I buy a Lowrance GPS unit for the back of my boat and a LowranceNET compatible unit for the front, I can network the two and use the front unit to display and input data from the rear unit. Am I off base or this the way it works? Someone please fill me in on how LowranceNET works (the website's a little vague).

You can use 2 lowrance gps units and network them.  If you have wpt sharing checked, when you put a wpt in one then it goes in the other one at the same time if both are turned on.

Lowrance just came out with a new cable that allows you to hook up two units that are networked and have them share one transducer.  My cable should be here tomorrow.

Thanks, Jig Man.  I was hoping I wouldn't have to buy two GPS units but I guess it's only a couple hundred dollars more.  Do I have to buy two chips too or can I network one chip over two units?

All they can share is back light synchronization and waypoints. Now with the new cable they can share a transducer. As far as I know they can not share a map. Lowrance has several free maps which you can download. If they are the lakes you fish then you can put them on some sd cards and load the into both units, but that too will require a card for each unit.

I have cards for both units but never put a map card in the front one. I use the unit at the console to find stuff then I have a blank card in the front one to record the sonar trip so I can review it at home and set some new wpts on places I didn't see while fishing.

You can also buy Lowrance units with 30 gig hard drives that have maps loaded- again another $150. I have been looking to upgrade as well but would want a separate transducer on my trolling motor. by connecting both units, it will share same waypoints. Let's stay in touch on this?