I've seen multiple people post pics of using a Helix and Solix at the bow and a Helix and Solix at the console. Some are pro fishermen. I'm looking to upgrade at least 1 of my Helix graphs in order to get a Mega 360 and I had looked at possibly upgrading 2 units to Solix's. I realize that Solix units won't talk to Helix units other than for waypoints. Just curious if anyone knew why people combine units? Maybe some are just poor people like me who can't afford to upgrade all 4 graphs at 1 time....but pro's kinda have me scratching my head...