788 HD DI Combo advantage- picture like deciphering of structure that is under the xducer and out to the sides a few feet...(waypoint markability only on boat's tracking line)...
798ci SI combo advantage- picture like deciphering of structure that is under the xducer, out to the sides of the xducer 100+ feet, which side of the xducer, and waypoint markability of that structure anywhere on that screen...
Rickie


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