I've decided when I get my new boat in a few months I'm going to get 2 Helix 7 si models. I've been comparing the g2 and the g2n and the g2n is a bit more and momma bear is already going to kill me for spending that much on 2 units, so I'll buy her a puppy or something and all will be forgotten. My question is could I save my waypoints from one unit on an sd card and load them to the other unit?