Garmin 441s

[wolfman]

I have a Garmin fish finder and would rather try to understand women! The owners manual tells me nothing! I called Garmin to find out if there is more info available and they said not! They did offer to answer questions on the phone which was no help. The problem is that I don't have any experience with sonar and even the little things escape me. i don't how to set it up properly or understand the pros and cons. If anybody has this unit I would like to pic your brain. Thanks