Summary: I've had this unit for not quite 3 years now. If I would have written this review a year ago, it would have been a 5 star review for sure. Unfortunately my unit recently started randomly wiping out ALL of my GPS data (waypoints, tracks, etc.), as well as resetting itself back to factory defaults.
Summary: The G.P.S in here is just what any fisherman or fisher woman needs. It shows your routes, can mark your way point, ( you'll never get lost again) mark your fishing spots. This has great detail of the lake your on, showed my routes for the whole week, shows great structure, and detail, very easy to...
Summary: Thr Hummingbird 597 HD preformed very well particularly with the optional speed wheel - this solved the GPS speed problem. The GPS is easy to operate and a valuable asset when seeking cribs and structure
Summary: Great unit. The bigger screen is the way to go, especially if you want to glance at it while burning across the water. GPS function allows you to mark spots you want to return to with the push of a single button.
Summary: Awesome Fishfinder/GPS combo. It works as advertised. It's on a Triumph 17cc. The transducer reads at all speeds. I haven't used the waypoints yet, but the GPS easily tracks the boat's travels.