Re: What's a good fish finder to get for muddy and shallow lakes?
FYI. The GPS on your phone is not particularly accurate and if you are talking about an I-PAD, there is no GPS on it. Does your phone or tablet offer the capability to set way-points? I would look at the Hummingbird 596, 597, or 598 depending on your needs. 596 has no GPS, 597 has gps, and 598 (new) has side imaging. Consider also getting DI if that is of interest.
TerryMSU