For me personally what ever screen I am using 2D side etc my sensitivity is always up and I am constantly changing as depth and conditions change. I never look at structure I am only looking for fish as I do not care what is down there if there are no fish so all my adjustments are to enhance fish. I run a faster scroll speed which helps me pick fish out as they will take up more pixels which show better on my screen 99% of the time I am using a blue screen in side imaging as fish show up white which for me is the highest contrasting colors.