I recently purchased a 2014 skeeter 190tzx. I will be adding a ultrex and am planning on adding a unit at the bow as well as console. The boat has the stock 789 unit in console. Will I be able to hook the thru Hull transducer currently mounted in the boat to any new unit for high speed readings ? Also Is there a major difference in the solix 12 chirp mega sI gpsi (model 410400-1) and the brand new gen2 si solix? I am looking to mount the solix 12 at the console and maybe a helix at the bow. Any thoughts or recommendations would be greatly appreciated. Thanks !