Finding Crappie with a sonar!!

[xrfoxracer]

I am having trouble finding these fish this year!!I got on some crappie on some dock on the main river but i can tseem to see any amount if them schooled up any on my fish finder. Are these fish there or what.

 

[Liveliner]

"They are there and What." I have been finding crappie in 6' to 10 feet of water. I think that they get spooked because they are schooling suspended 4' to 6' deep from the surface. I have a side view sonar and can see many crappie in the areas out away from my boat where I fish. I can actually follow them as they swim away from my boat. However, I do not recall seeing any on my high dollar down only sounder unit.