Hummingbird 798 HD SI/DI combo Tips

[SaltERedneck]

Anyone have any good tutorials or tricks for setting up this model? Thinking about:

1. Range =
2. Chart speed =
3. Sensitivity =
4. Sharpness =
5. and any other information.

Been playing around with the settings for a while now and looking to get the best picture and settings. Using it primarily for Toledo Bend. Looking to fish anywhere from 15'-50' Wed - Sun. Owned this unit for over a year and love it. Thoughts or links appreciated. Legit response are preferred.

Currently I run the range at 100-150 ft, chart speed at 3-5, sensitivity varies, and I don't really play with the sharpness.