Review on Vexilar SP200 T Box Smartphone Finder by John Vann

I haven't quite got the accuracy I need yet and I'm playing with the placement of the sensor. But I like to use it on my cell phone and don't have to install a full-fledged fish finder in a small space. I also like when my phone can do multiple things and I like the Navionics interface at a great price. For my purposes I will continue to try to adjust hull placement as I have accurate, simple through hull sonar that does not find fish. Maybe over time I'll try installing a transom mount as I don't want to drill another hole in my boat.