First off I am horrible with adjusting my unit and went back to auto mode last night to get a decent picture. I've seen some tutorial videos that are recommended for units like this but can't remember what they are. I have a few pics I will post if someone could help me if it needs to be adjusted and what you would do?

My plug for the ducer/power is also rotted away so it hardly powers on most the time. What ducer would you recommend for fishing and looking for brush piles?