Just got a Helix 9 mega Si for the bow.humminbird trolling motor adaptor and transducer to long...problem solved.Fishing Specialties in Colorado makes this unit.very well built,easy on off no tools needed.this one came to fit the versa track ,no drilling. The down rod comes off in seconds for high speed running,bracket stays in place.130.00$
.multiple mounting options,adaptor plates for Garmin and Lowrance.