Does anyone own a deeper fish finder, if so do you recommend buying it?
Castable bobber style wireless transducer with a mobile device (smartphone or tablet) as the display.
Just a more modern version of the Humminbird Smartcast.
Some bank fishermen use that or a similar product like the Vexilar Sonarphone T-Pod.
For the landlocked, it is a handy tool if you understand sonar.
Read the reviews on the sites that sell them.