Here is a smart gadget that lets you fish like a pro. The FishHunter PRO is an app smart fish finder with a WiFi range of more than 150 feet. It makes sonar information available on your smartphone, allowing you to analyze the bottom structure easily. You can troll the device up to 2.5mph and cast it from the boat or shore.
FishHunter PRO floats on the surface of the water and can withstand temperatures as low as -22F. It has multiple views to help you find the bottom depth of the water and detect fish movement.