What am I looking at? Sonar interpretation..

[Gundy]

So I posted a thread in the general section about some general fishing questions. However I wanted to post some screenshots of what I was seeing on my depth finder while fishing. I wasn't at all sure what I was seeing, nor do I know if it even shows fish properly. Its a el-cheapo Eagle Cuda 300, purchased to try and just see depth + structure.

Here are some photos if someone could attempt to tell me what I am looking at in some of them? I was trolling a steep embankment that drops off from 6-12 feet rather sharply to 25ft max. I couldn't tell if I was seeing brush piles, fish, or anything.