I have a Lowrance fish finder but I can never seem what to put the sensitivity at. If I put it on auto I feel like its just to sensitive with bait and smaller fish, but when I manually change the sensitivity I don't know what to use. What do yall use on your settings?

In my opinion, every lake/depth is different. Deep/clear water ill use 100%. Most of the time my 2d sonar is on 90% or more. Even though you might get alot of "clutter" in the picture, you can still get alot of info if you knoe what your looking at, like bottom composition, brush/rock piles etc. With side/down imaging i use 2d sonar alot less but like everything else, it has its time and place. Best advice i can offer is save yourself alot of wasted time by hiring a guide who is proficient in electronics...

Would help to know what Lowrance unit you are using?