I think I may have solved the fishfinder mounting problem on my sundolphin. The transducer will be mounted on the side with a suction cup and bracket from my hummingbird, with the guarantee they wouldn't honor. The monitor Is mounted in front of the rod holder port on a piece of wood that has Velcro on it to hold it in place. Now all I have to do is test it, which will be in a couple of days I hope, bad knee is slowing me down. I decided against the magnets because I didn't want to cut a hole in the hull.