JG, how do you like the garmin? I have the same unit and it drives me crazy. It may be the area that I am in but I get a lot of gray screens (usually when I need navigation the most, storms, etc.) and it doesn't show my drops many times too. I want to throw it in the water sometimes but if it is just my reception area, then any brand will be doing the same thing.
I really like the Garmin. The GPS has been flawless. I've had it for about a year.
I lost bottom sometimes so that was my excuse to buy the Dragonfly and have a backup Depthfinder/dedicated fishfinder.
About the Garmin:
Make sure you have the most recent software. I believe it is version 4.60.
When I purchased my unit, it had outdated software.
I had trouble downloading 4.60 to a microSD card and Garmin was great and just sent me a free card that updated the unit and updated all my maps.
They also walked me through some settings I never knew existed.
It was when I first bought the unit. I wasn't having problems. I just wanted the most recent maps and software.
I vaguely remember checking "WAAS" settings and checking "Skyview Accuracy".
They were really good on the phone while I was at my boat going through the settings and I have had perfect GPS performance since day one.
I would call them when you have a half an hour or so and let them walk you through the settings and make sure you have the most recent software.
Like I said I do lose bottom at speed or in chop sometimes but I have never moved the transducer from the initial install.
Hope this helps. Good Luck.
