I had a Lowrance X71 put on my boat when I bought it new almost 3 years ago.
Here's some good news about your purchase of a Lowrance. Maybe it'll help get you back in good graces with the spousal unit. :grin:
Don't know if other manufacturer's do this or not, but the sonar on my X71 (ff, no gps) went silent a week ago. The speed and temp worked fine, but the sonar/ff stopped functioning.
I called Lowrance and they told me to send it back to them and include a check for $99.95. They will either repair it like new, or replace it with a new unit, and they said this was SOP for any unit they make. This is after the warranty has expired of course. They also add a new 6 month warranty on the repaired unit, and they said turnaround time was a week to 10 days....
Best of luck with it.....