Is there a mount that will attach to the ultrex in any way but be independent of the trolling motor shaft and operate by hand control? I'm finding out very quickly that the transducer needs to be mounted separately from the shaft in order to stay on a target....unless in very calm water, which is rarely the case. I've seen some mounts that attach to the boat, but I was wondering if there was one being made to attach to the ultrex.