Ok, so I have the 998ci hd si unit on my console. I'm going to sell the 787c2. what unit would be the best for me to buy for the bow and be able to connect the two unit together by ethernet? I want to use the US2 transducer in my terrova. I don't care much about being able to look at SI or DI on the bow. I do want to be able to share waypoints. and I do want to keep the GPS antenas seperate between the two units. I would like to have the bow unit with external gps but this is not a deal breaker because the head would be pretty close to the transducer. what unit (s) would be good for this? CHO would be prefered. Thaks!!!