So I just installed my second transducer and removed my 360 setup. I went with a the fish obsessed zero degree mount / spacer for my forward transducer, and its located just above the head of the trolling motor. The fish obsessed zero degree mount has a large spacer which allows a clear picture.
My perspective mode mount is a fish obsessed mount I have partway up the shaft. I used this mount as I wanted to be able to adjust the angle of perspective mode. My initial setup I had it too high on the trolling motor shaft and was right at the water surface. Last night I re-adjusted and it should be better. Wouldn't call myself an expert with perspective mode, but I hated my 360 setup and preferred another garmin graph. The other upside is if my regular forward transducer goes out, I can adjust the fish obsessed mount to forward mode and I have a backup transducer.