With an ethernet switch you can share your gps wherever it is located. I have 1198 - console, 898 bow. The puck for my 1198 is on transom gunnel almost directly over transducer for more accuracy. I moved the 898 to bow but kept puck on console. Only about 4' difference. The gps for the 898 was hooked to my vhs radio and I saved by not having to move all that. More of a personal preference rather than a necessity.