Thank you for the reply. It was an old post and I gave up on getting an answer.

Your reply makes sense. I will check the transducer angle and tilt it a little forward. The Garmin has a seperate speed wheel that was working when I took the boat out for a tryout but never worked again later. On pulling the boat in the fall I found that the forklift that put the boat in the water must have tilted the speed wheel above the transom bottom. The same lift could have displaced the transducer.

Boat will go back in soon. Will let you know the results.