i pretty much use my console to SS and DS to find spot's i like and mark waypoint and then come back to them with most time just my map and 2d sonar at bow.... but that just works best for my style of fishing... im not sure bout diff in lss 1 or 2 but if i was buying it would be lss2... i bought the lss2 transducer.... with touch9 and 12 you have two ethernet ports the touch7 just has one... im bad bout fishing to much and not learning more bout my sonar.... they can do so much if you dont fish few days week it hard to remember it all