I'm installing a GPSmap 420s in my boat (the St lawrence river has a lot of shallow spots here and there).
The transducer that came with the package is an transom mount.
I'm not a big fan of the wire going up the transom, and understand it could be easily damaged, so I'm possibly looking for other options.
In hull pucks are easy to install, but not sure if they are reliable.
Though hulls, well I need to make a big hole in my boat and not sure about that for humidity/lamination problems.
What's your take on this? Keep the transom mount or go with another transducer?