Welcome to the Humminbird Side Imaging Forums lystonp1.
Could you please post a Screen Snapshot image. Not all of us use HummViewer so a Screen Snapshot would be more familiar for us.
It does look like you are getting some sort of blockage or reflection to the right of the transducer. Try making a Screen Snapshot with the SI Range set to 20 feet with the boat drifting. If it is still there than it may very well be the water inlet screen. If it is gone than it is probably air bubble flowing off the right side of your boat’s hull when you are moving.