Ok here is a question that I am sure will get some technical responses. I received my new FTD with a Transducer on the foot of the trolling motor…(as I requested). The thing is, it came only zip tied to the foot. I have always used the metal hose clamp to fasten the puck to the foot. I heard something about the metal clamp interfering with the magnets in the foot. Is this true, or is the metal hose clamp fine to use? Jamey