An example of what I meant about interpreting my sonar, while I was unsuccessfully fishing Monday I noticed a series of small dots on the display at 50' in 63' of water. With my sonar set to auto my first thought was that crappie being generally around 14" my sonar should return a small echo at 50' seeing fish that size that far from the transducer. The question is would I know not having an under water camera on my boat? I would not know, my instink was to drop a spoon and see if I caught anything. I will readily admit that it is difficult to jig up crappie that deep with out live bait but I don't like using live bait. I actually began catching crappie at 50'. I did not catch a lot but enough for it to be a learning experience. I think I even posted a pic of the first fish because I got excited. I never considered going to manual mode and turning up the sensitivity although that would have been an option I am just not used to doing it. I suppose I could have told my sonar to zoom to the last 20' of the water table and increase the sensitivity to get a better look but I was happy with what it was showing me even though I was still on auto. In the summer I will increase the sensitivity just to see the depth of the thermocline and then back to auto but most of the time I can see it on auto. It would be easy to think that those results are just with that specific unit but I have two HDS-5's on that boat one at the helm and one at the trolling motor and one HDS-5 on the trolling motor of the pontoon boat and a hummingbird 889 at the helm and get the same results from all 4 units. It is not that I am any better at reading my sonar but more of that is what I am used to doing because when I first started using sonar on my boats they did not have the logic chips available today so only option was figuring out wat the sonar was telling me. I guess now I am just to lazy to learn all the capabilities of the new stuff.