I have noticed I get much better returns in clear water. There are times when the visibility is so poor that brush cannot easily be seen. I have the Gen 2 with 10 inch screen. The same finder that has "fuzzy" brush in dirty water does this (SUV with sunroof) in moderately stained water, and this (fish on brush) in clear water.Name: 1.jpg Views: 436 Size: 46.3 KBName: 5.jpg Views: 445 Size: 78.1 KB