Quote Originally Posted by tncrappiebass View Post
Sorry, I don't know what you mean by point 1.
The Point 1 is an external GPS antenna with a built in heading sensor. You will get a faster refresh rate on the gps plus the unit always knows which way the boat is pointed. With the heading extension turned on there is a line projected on the map screen indicating where the boat is pointed. Line up the heading extension on the waypoint and drive straight to it. IMO this is a great addition to any HDS unit, well worth the $200 costs.

Lowrance Point-1 GPS Antenna - LOWRANCE | Marine Electronics

There is a lot of information here.
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