Humminbird 728 5-Inch Waterproof Fishfinder and Dual-Beam Transducer Reviews | Marine Electronics

After checking the web for reviews on Lowrance and Humminbird both and finding horror stories anymore about customer service from Lowrance and wait times of months, not to mention being charged to repair units under warranty, I decided to try this out as I called them several times with questions and got excellent responses each time.

Mounted on the trolling motor on the front of the boat and I have to say it is sweet. Works exactly as advertised with no problems. SI is awesome compared to older graphs.

I have also done a software update using a sd card which worked flawlessly. So far this unit is well worth the money.

I purchased this unit in March, 2011 and used it 3 times. The second time the GPS tracking would not track under 2mph and would only show a donut, which is very frustrating if trying to stay over a marked fishing spot.

I contacted Humminbird and they said to download update 5.410 and it would fix the problem. I did this.

I used it the third time and the GPS tracking problem had not been fixed with the new update. This time out the depth reading began going crazy. I was in approximately 180 ft. of water and it was reading all the way down to 1.7 ft. and bouncing all over. I spoke with 3 different Humminbird techs via phone while I was on the water and we tried all kinds of settings and could not fix the problem.

Humminbird is going to send me a new transducer to try, but I do not believe it will fix it. If not, they said I will have to send the unit in to them.

It is ridiculous to pay over $800 for an item and it not work correctly, so I would not buy this item until Humminbird gets these issues resolved if I were you.

This device seems to do everything it says it will do, but; You need to study, study, study the displays to be able to understand what you are looking at. I am sure that I will enjoy this more after I have used it for a few months. The gps, used with a LakeMaster chart is awesome. The si, and di views need to be used at a steady speed (still to be determined in my case) but they do work as advertised. If you can afford it, the larger screen is advised. I would buy this again if I need another aone.