I'm currently running two 999ci hd si's on my boat. One is located at the console, the other on the bow. They are ethernet linked with the 5 port hub. If I wanted to temporarily move the bow unit to a location at the stern, say for the purpose of trolling, can I simply run an ethernet cable to the rear mounting location and receive the data from the transducer?

You need power as well

Thanks Slone.