Lowrance sent this, im looking forward to seeing their booth...

(snippet)
With StructureScan, you can quickly sweep large bodies of murky or turbulant water and often view 30ft, 50ft or more to either side of the boat. Down and side imaging provides superior resolution for accurate identification and the backtrack feature allows you to scroll back on the screen and mark a waypoint exactly on an object so divers go directly to it.

You are invited to the Lowrance Booth,