I recently made this bracket to mount a depth finder , speed sensor and tempture probe on a older type of toon that didnt have the factory bracket, I did not want to risk some one welding on it , so I came up with this, it works fine
Not too bad, probably causes some killer spray at speed but if it works, the only thing I would do different is maybe try to attach it to the bow eye and get rid of the ring.
Actually I would have welded a bracket on but I have been welding aluminum for 23 years, nice job.