fish finder

[throwback]

Fishfinders are like most all other things in this world you get what you pay for. Depending on your budget I would stay with furuno, lowrance or garmin in that order. I regularlly fish the washington canyon and my furuno unit reads the bottom quite well down to around 1300 foot and I can get a digital readout of bottom depth to below 3000 foot depending on the thermocline. The deepest readout was 3307 feet. The transducer is located on the transom and above 30 kts it can get erratic but at that speed I am just trying to get someplace . Its just common sense that if you shoot ultra sound thru a solid hull you are going to lose detail so mounting inside the hull is a tradeoff. The other disadvantage is that in a shoot thru
application you lose you temp and speed functions. For me temp is almost as important as contour and echos. My suggestion is buy a quality unit and try it on the outside if your not satisfied inside is always an option