Sidescanning sonar is a tremendous tool to understand what's under your boat. But looking at screen shots doesn't really show what you're seeing. Instead, check out these videos that will help improve your comprehension of what the images are showing.
Bass anglers use sidescanning sonar to identify fish on structure, but all boaters can benefit from the realistic underwater picture.
It's key to know what you're looking at on sidescanning sonar.
Understanding what an improved view beneath your boat can get you.