I had mine out for the first time Monday, talked with the people a garmin support before i put in. Have you ran a update get from garmin no charge. I think it was 7.50 and it updated the unit and gls10. The garmin man said after update i was ready to go. You will have to play with the gain, lot of trash in the water where i was at. What i could see on the unit was better then any youtube i have seen. The garmin rep told me when i take the transducer out of the water be sure to go the home on the echo because the water keeps the transducer cool. You may already know all i said. I think there will be a learning curve but like what i see so far.