In four feet of water, how much do you think you'll see? Waste of time.
That's an ignorant response. Humminbird units are the best shallow water side scan, far superior to lowrance in that regard. I do not know how Garmin ranks for shallow water side scan. Humminbird can easily show reefs on side scan 100+ ft on either side of the boat in 3 ft of water. Also the red/green color pallet shows hard bottom(reefs) with ease.