I think its awesome the the Old Town Predator comes ready with a recessed are for a Humminbird sonar. I am a Humminbird fan and this was a point which swayed me toward the Predator kayak. I decided to use a Humminbird 788 DI unit. However the Humminbird transducer mount I’m told would work with the down imaging products.
This dilemma forced me to make my own mount using a few pieces of 1″ PVC.
Simply notch the 1″ PVC to allow the transducer to insert into pipe, drill and install a 1/4″ bolt. It was real easy. It took a few times getting the length just right when mounting into the scupper hole. As you can see I used another threaded section to hold it in tight. No glue was used.
I also wrapped some electrical tape to make for a slightly tighter fit.