Which setting do y'all use? On 800 it's definitely more detailed but it's also very bright and can't always see the fish. 400 isn't as detailed but fish show up better. Also do you have it set at 83 , 200, or 83/200? Trying to get it dialed in.

What sd card should I use?

Not getting much out of 2D and DI. 2D will show structure that DI doesn't unless I have DI sensitivity on 20, but then the screen is cluttered with junk also. I may not understand what I'm seeing but I don't know.