fishmark 480 settings for arches

[Jeffunder]

Any of you guys know how to set a eagle fishmark 480 to get good aches? Chart speed, sensitivity, what speed to run the boat? Thanks

[Jason Gilstrap LOWRANCE]

ping speed 75, chart speed 100, sensitivity 74-78, noise reduction and surface clutter on low. Just IMO

[gabowman]

ping speed 75, chart speed 100, sensitivity 74-78, noise reduction and surface clutter on low. Just IMO

Ditto! The Eagle doesnt give PERFECT arches but neither do most of the units.:rolleyes: You can try adjusting the transducer some trying to have it flat perpendicular to the water and that is about all else I can tell ya. Idling speed up to 5 mph gives the best screen in my opinion.

[Spoonminnow]

The unit produces excellent bottom detail even with fish symbol enabled. Do I miss more fish having it on? I mostly fish lakes that are under15' in depth.

[Jason Gilstrap LOWRANCE]

IMO, you want to keep the fish symbol off. you get better true return.

[Jeffunder]

Thanks for the info Guys..

[Spoonminnow]

ping speed 75, chart speed 100, sensitivity 74-78, noise reduction and surface clutter on low. Just IMO

I didn't know there was a ping speed. I'll try all the settings next time I'm out. Thanks.
Note: surface band is quite large and though I hear the fish alarm, I don't see fish nearer surface.