Hey Spawner,
Humminbird has a transducer exchange. You could possibly trade yours in on a puck style just like it. I just got a matrix 727. I called their customer service and they told me which one (dual beam puck) would go with my depthfinder. I went ahead and mounted the skimmer on the back and I think I am going to get the switch and second puck style tranducer for my trolling motor, so I can change back and forth.
Hevi-5