Originally Posted by Turd Ferguson
You may want to consider spending more and getting a Humminbird model that has side imaging.
Side imaging is by far the best electronic help a guy can get especially in shallow water (IMO, I have 2 HB SI units linked on my rig).
You can still mark a school of bait fish or gamefish with side imaging plus you still have 2d and DI for anything you might miss under the boat (most HB SI units have DI as well).
If side imaging is not in you budget I would buy the wider screen. I bought a DI unit and got rid of it immediately for another SI unit. DI is more effective when used in conjunction with SI IMO.
Crap I just noticed you said kayak (SI would be worthless to you). Go play with the DI demos at BPS and see if you like it. They do provide some useful info and they are neat, but you can manage with a 2d...just not as cool to look at. I will say DI has helped me learn to read a 2d sonar better though...but it has never helped me get the fish to open their mouths and bite any better